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• How does a segment-based rendering engine (as in Descent) work?

  - by Calmarius

  As far as I know Descent was one of the first games that featured a fully 3D environment, and it used a segment based rendering engine. Its levels are built from cubic segments (these cubes may be deformed as long as it remains convex and sides remain roughly flat). These cubes are connected by their sides. The connected sides are traversable (maybe doors or grids can be placed on these sides), while the unconnected sides are not traversable walls. So the game is played inside of this complex. Descent was software rendered and it had to be very fast, to be playable on those 10-100MHz processors of that age. Some latter levels of the game are huge and contain thousands of segments, but these levels are still rendered reasonably fast. So I think they tried to minimize the amount of cubes rendered somehow. How to choose which cubes to render for a given location? As far as I know they used a kind of portal rendering, but I couldn't find what was the technique used in this particular kind of engine. I think the fact that the levels are built from convex quadrilateral hexahedrons can be exploited.

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• Fault Handling Slides and Q&A by Vennester

  - by JuergenKress

  Fault Handling It is one thing to architect, design, and code the “happy flow” of your automated business processes and services. It is another thing to deal with situations you do not want or expect to occur in your processes and services. This session dives into fault handling in Oracle Service Bus 11g and Oracle SOA Suite 11g, based on an order-to-cash business process. Faults can be divided into business faults, technical faults, programming errors, and faulty user input. Each type of fault needs a different approach to prevent them from occurring or to deal with them. For example, apply User Experience (UX) techniques to improve the quality of your application so that faulty user input can be prevented as much as possible. This session shows and demos what patterns and techniques can be used in Oracle Service Bus and Oracle SOA Suite to prevent and handle technical faults as well as business faults. Q&A This section lists answers to the questions that were raised during the preview event. Q: Where can retries be configured in Oracle Service Bus? The retry mechanism is used to prevent faults caused by temporary glitches such as short network interruptions. A faulted message is resend (retried) and might succeed this time since the glitch has passed. Retries are an out-of-the-box feature that can be used in Oracle Service Bus and Oracle SOA Suite using the Fault Policy framework. By default, retries are disabled in Oracle Service Bus. Read the full article. SOA & BPM Partner Community For regular information on Oracle SOA Suite become a member in the SOA & BPM Partner Community for registration please visit  www.oracle.com/goto/emea/soa (OPN account required) If you need support with your account please contact the Oracle Partner Business Center. Blog Twitter LinkedIn Mix Forum Technorati Tags: fault handling,vennester,SOA Community,Oracle SOA,Oracle BPM,Community,OPN,Jürgen Kress

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• Splitting a tetris game apart - where to put time-management?

  - by nightcracker

  I am creating a tetris game in C++ & SDL, and I'm trying to do it "good" by making it object-oriented and keeping scopes small. So far I have the following structure: A main with some lowlevel SDL set up and handling input A game class that keeps track of score and provides the interface for main (move block down, etc) A map class that keeps track of the current game field, which blocks are where. Used by the game class. A block class that consists of the current falling block, used by game. A renderer class abstracting low level SDL to a format where you render "tetris blocks". Used by map and block. Now I have a though time where to place the time-management of this game. For example, where should be decided when a block bumps the bottom of the screen how long it takes the current block locks in place and a new block spawns? I also have an other unrelated question, is there some place where you can find some standard data on tetris like standard score tables, rulesets, timings, etc?

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• Complex shading using one single (small) texture

  - by teodron

  Recently I stumbled upon a demo reel in UDK about how one can attain beautiful results using just one (rather tiny) texture that's being sent to the shader pipeline. The famous link is this one. Basically, the author states that they've used just one texture and give a snapshot of the technique here. I see that every RGBA channel contains different grayscale information.. and that info could be used to inside a shader to obtain a colour blended output. The problem is that the reel displays a fairly complex scene. To top that, the author even makes use of a normal map. How did they manage to fit a normal map in an already cluttered texture? It makes sense to have a half-space normal map by using only RG from an RGB texture, but what about the rest of the information? Since it was proven to be possible, could someone please explain how it was done (the big picture, not the dirty details!)!? Here's the texture being used. Click to see in full size.

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• FP for simulation and modelling

  - by heaptobesquare

  I'm about to start a simulation/modelling project. I already know that OOP is used for this kind of projects. However, studying Haskell made me consider using the FP paradigm for modelling a system of components. Let me elaborate: Let's say I have a component of type A, characterised by a set of data (a parameter like temperature or pressure,a PDE and some boundary conditions,etc.) and a component of type B, characterised by a different set of data(different or same parameter, different PDE and boundary conditions). Let's also assume that the functions/methods that are going to be applied on each component are the same (a Galerkin method for example). If I were to use an OOP approach, I would create two objects that would encapsulate each type's data, the methods for solving the PDE(inheritance would be used here for code reuse) and the solution to the PDE. On the other hand, if I were to use an FP approach, each component would be broken down to data parts and the functions that would act upon the data in order to get the solution for the PDE. This approach seems simpler to me assuming that linear operations on data would be trivial and that the parameters are constant. What if the parameters are not constant(for example, temperature increases suddenly and therefore cannot be immutable)? In OOP, the object's (mutable) state can be used. I know that Haskell has Monads for that. To conclude, would implementing the FP approach be actually simpler,less time consuming and easier to manage (add a different type of component or new method to solve the pde) compared to the OOP one? I come from a C++/Fortran background, plus I'm not a professional programmer, so correct me on anything that I've got wrong.

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• Booting Ubuntu 12.04 from external eSATA disk

  - by Lord of Scripts

  This is my system topology: Disk #1 (SATA Internal) C: D: (Windows 7 Ultimate) Disk #2 (SATA Internal) E: (Windows Backup) Disk #3 (eSATA External) H: I: (Other windows data) /dev/sdc3 Linux Swap /dev/sdc4 Extended partition /dev/sdc5 Linux / So, I originally had there Ubuntu 8.1 from years ago but never got to use it. Now I used the Ubuntu 12.04 Live CD to install on that same location (That live CD takes a century to boot on a 6GB Intel i7 system...). The installation went fine, I selected it to install on /dev/sdc5 but it never asked me for any boot stuff, where I wanted to install Grub or whatever it is that it uses nowaways (I come from the LILO days when it always worked :-) So, yet again I can't access my new Linux installation. I have to wait a century to boot the "Live" CD and it allows me to see my new installation but I can't do anything with it. I tried the approach of this blog post. Copied the linux.bin of /dev/sdc5 into C: and used the BCDEdit steps to declare the new OS. So when I boot I see the Windows Boot menu and select Linux and after than I only get a black screen with a blinking cursor on the upper left. I can boot into Windows though. So, perhaps it didn't install the boot code on /dev/sdc5? I used this setup years ago booting from Windows with a BIN file: dd if=/dev/sdc5 of=/mnt/share/C/linux.bin bs=512 count=1 I am very reluctant to run GRUB because years ago I did and it wiped out my Windows boot sector and took quite some effort to recover it and be able to boot Windows again. I have been trying to install GRUB on a blank USB stick but I can't find anything clear enough. My system does NOT have a floppy. So can someone give me some ideas about how to get control of my Ubuntu 12.04 installation?

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• Whats a good host for an active vBulletin site?

  - by Kyle

  I've been switching hosts using a VPS each time and I'm just really not sure I'm finding the right VPS's. I've used a VPS from burst.net & rubyringtech and I just feel like it's slowly killing my site because of the slow speed. I really don't know if it's the network or the VPS itself but I really wish to fix this. When I TOP into the VPS peak times it shows this: top - 03:18:56 up 16:33, 1 user, load average: 1.33, 1.40, 1.33 Tasks: 30 total, 1 running, 29 sleeping, 0 stopped, 0 zombie Cpu(s): 27.2%us, 13.6%sy, 0.0%ni, 59.2%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 1048576k total, 679712k used, 368864k free, 0k buffers Swap: 0k total, 0k used, 0k free, 0k cached And pages take atleast a good 2-3 minutes to load. I have only like 50-60 members on the forum also. I had a shared hosting account and the forum was lightning fast.... Is a VPS a bad idea? :\ What should I do to fix this? I'm running lighttpd with xcache, and the latest mysql + php version. The server is a intel i7 2600 w/ 1gb uplink (I think the 1gb uplink is a lie because I've tested the network and the highest download speed I've seen was 20mb/s from a code.google page) All in all I've seen people talking about linode. Should I try them? I honestly don't need a dedicated server yet it's only 50-70 members online. What should I do? I really want a VPS because I enjoy root access. Does anyone have any suggestions?

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• What are some best practices for minimizing code?

  - by CrystalBlue

  While maintaining the sites our development team has created, we have come across include files and plugins that have proven to be very useful to more then one part of our applications. Most of these modules have come with two different files, a normal source file and a min file. Seeing that the performance and speed of a page can be increased by minimizing the size of the file, we're looking into doing that to our pages as well. The problem that we run into is a lot of our normal pages (written in ASP classic) is a mix of HTML, ASP, Javascript, CSS, and include files. We have some pages that have their JS both in include files and in the page, depending on if the function is only really used in that page or if it's used in many other pages. For example, we have a common.js and an ajax.js file, both are used in a lot of pages, but not all of them. As well as having some functions in a page that doesn't really make sense to put into one master page. What I have seen a few other people do online is use one master JS file and place all of their javascript into that, minify it, gzip it, and only use that on their production server. Again, this would be great, but I don't know if that fully works for our purposes. What I'm looking for is some direction to go with on this. I'm in favor of taking all of our JS and putting it in one include file, and just having it included in every page that is hit. However, not every page we have needs every bit of JS. So would it be worth the compilation and minifying of the files into one master file and include it everywhere, or would it be better to minify all other files and still include them on a need-to-use basis?

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• Is there any way to facilitate switching windows in Ubuntu?

  - by Ivan

  I'm just a student who received my laptop from my uncle, who's a coder, so I'm still getting used to working with ubuntu. I recently upgraded ubuntu from an earlier version, and everything seems to be pretty great. The only thing is that when I open a program, or file, or whatever, it takes up the whole screen. I can only close it by going to the far top left of my screen, or by ctrl+W. Anyways, I find it really hard to switch between programs. For example I really like to have my windows that are open to be accessible by clicking on their icon at the bottom of the screen... Great when writing or researching. Anyways, I really just want to find an easier way to switch windows. Also, I used to love the way I could cube-rotate my screen, and just drag files from one desktop to another, with compiz. Now, its sort of like flipping a coin when I switch windows, is there any way to get my desktop cube back? And yes, I have enabled all the old settings I used to use with compiz. Sorry if what I'm asking is very basic, I know how to use a computer, I'm just not really familiar with the interface! Any help is greatly appreciated.

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• Deleted info in Boot folder

  - by user207984

  First off, I'm using Zorin 7 OS. So my Boot folder was too full to install any new updates, I used a tutorial I found somewhere on here to remove the unneeded linux-image files, and must of also deleted the latest one as well. Now when I attempt to boot I get error: no such partition. grub rescue> I used my MultiSystem USB to install (on a separate partition) a different Linux OS (Kali) and no longer get that error, however, it will ONLY give me the option to boot Kali Linux. Here's the biggest new problem though, I used the built in option of hard drive encryption for Zorin 7 when I initially installed it, so now when I attempt to explore it (to get all my saved data which is REALLY important to me), it asks me for password for encryption. However, the password says it in not recognized, and I know it's right, I had to type it in every single day. So I either need a way to restore my Zorin 7 boot files or GRUB or whatever, so I can boot it up... or I need to know how to fix my encryption problem to save all my info.

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• Template syntax for users - is there a right way to do it?

  - by RickM

  Ok, I'm in the middle of building a saas system, and as part of that, the hosted clients need to be able to edit certain layout templates, baqsically just html, css and javascript files. I'm obviously going to be wanting to use a template syntax here as it would be dumb to let people execute PHP code, so in this instance template syntax does need to be used. I know that in the grand scale of things, this is a very minor thing, but what template syntax do you use, and why? Is there one that's considered better than others? I've seen all sorts being used with no real consistency, for example: Smarty Style: {$someVar} {foreach from="foo" item="bar"} {$bar.food} {/foreach} ASP Style: {% someVar %} {% foreach foo as bar %} {% bar.food %} {% endforeach %} HTML Style: <someVar> <foreach from="foo" item="bar"> <bar:food> </foreach> PyroCMS/FuelPHP "LEX" Style: {{ someVar }} {{ foreach from="foo" item="bar" }} {{ bar:food }} {{ endforeach }} Obviously these arent 100% accurate (for example, LEX is used alongside PHP for loops), and are only to give you an example of what I mean. What, in your opinion would be the best one (if any) to go with. I ask this bearing in mind that people using this are likely to be novice users. I did look around at a bunch of hosted CMS and E-Commerce systems as these seem to make use of user-editable templates, and most seem to be using some form of their own syntax. I should note that whatever style I end up going with, it will be with a custom template handler due to the complexity of the system and how template files are stored. Plus I'd not want to touch the likes of Smarty with a barge pole!

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• Most common parts of a SELECT SQL query?

  - by jnrbsn

  I'm writing a function that generates a SELECT SQL query. (I'm not looking for a tool that already does this.) My function currently takes the following arguments which correspond to different parts of the SELECT query (the base table name is already known): where order fields joins group limit All of these arguments will be optional so that the function generates something like this by default: SELECT * FROM `table_name` I want to order the arguments so that the most often used parts of a SELECT query are first. That way the average call to the function will use as few of the arguments as possible rather than passing a null value or something like that to skip an argument. For example, if someone wanted to use the 1st and 3rd arguments but not the rest, they might have to pass a null value as the 2nd argument in order to skip it. So, for general purpose use, how should I order the arguments? Edit: To be more precise, out of the query parts I listed above, what is the order from most used to least used? Also, I'm not looking for solutions that allow me to not have to specify the order. Edit #2: The "fields" argument will default to "*" (i.e all fields/columns).

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• Java desktop programmer starting to learn Android development: how different is it?

  - by Prog

  I'm a Java programmer. All of my experience is on desktop applications, using Swing for the GUI. I spend a lot of time studying OOP, I have decent understanding of OO concepts and I design and program by the OO approach. I'm thinking of starting to learn Android development soon, and I'm wondering how different it is from desktop development. Obviously the GUI libraries will be different (not Swing), but other than that, I want to know if there are significant differences. I will divide this question to two parts: Apart from the GUI libraries, am I still going to use the standard Java libarary I'm used to? Aka same data structues, same utility classes, etc.? If not, what are the main differences between the libraries I'm used to and the libraries I'll be using? How different is Android development in regard to OO design? Are all of the familiar principles, design patterns, techniques and best pratices just as valid and used? Or is OOP and OOD in Android development significantly different than OO in desktop development? To summarize: apart from GUI design, how different is Java Android development than Java desktop development?

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• How should I compress a file with multiple bytes that are the same with Huffman coding?

  - by Omega

  On my great quest for compressing/decompressing files with a Java implementation of Huffman coding (http://en.wikipedia.org/wiki/Huffman_coding) for a school assignment, I am now at the point of building a list of prefix codes. Such codes are used when decompressing a file. Basically, the code is made of zeroes and ones, that are used to follow a path in a Huffman tree (left or right) for, ultimately, finding a byte. In this Wikipedia image, to reach the character m the prefix code would be 0111 The idea is that when you compress the file, you will basically convert all the bytes of the file into prefix codes instead (they tend to be smaller than 8 bits, so there's some gain). So every time the character m appears in a file (which in binary is actually 1101101), it will be replaced by 0111 (if we used the tree above). Therefore, 1101101110110111011011101101 becomes 0111011101110111 in the compressed file. I'm okay with that. But what if the following happens: In the file to be compressed there exists only one unique byte, say 1101101. There are 1000 of such byte. Technically, the prefix code of such byte would be... none, because there is no path to follow, right? I mean, there is only one unique byte anyway, so the tree has just one node. Therefore, if the prefix code is none, I would not be able to write the prefix code in the compressed file, because, well, there is nothing to write. Which brings this problem: how would I compress/decompress such file if it is impossible to write a prefix code when compressing? (using Huffman coding, due to the school assignment's rules) This tutorial seems to explain a bit better about prefix codes: http://www.cprogramming.com/tutorial/computersciencetheory/huffman.html but doesn't seem to address this issue either.

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• Google Analytics custom variables and how are they recorded?

  - by mrtsherman

  I have been asked to add GA custom variable tracking to my company's website. The company website uses server side includes, so making modifications to the tracking code happens identically everywhere. Maintenance is therefore a headache. Also, GA takes about twenty-four hours for custom variables to start showing up in reports and that makes troubleshooting a headache. So if you have custom variables // visitor level tracking, id = 12345 _gaq.push(['_setCustomVar', 1, 'id', '12345', 1]); // page level tracking, email = [email protected] _gaq.push(['_setCustomVar', 1, 'email', '[email protected]', 1]); The marketing people want the following out of this: User visits site and we record a unique id for them. Whenever they return this id will be used in GA. User signs up for our newsletter on page X and we record their email address. Whenever they return this email address is used in GA. Now a big problem for me is that I don't use GA and the marketing people don't use custom variables. So we don't actually know how this will work. Do I want Page, Session or Visitor level tracking? What happens because the same GA code is used on every page? If they visit the email sign up form and we record the email address, but then they go somewhere else where email is nonexistent will the value get 'overwritten.' Sorry for the long question, but there are a lot of unknowns for a GA noob.

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• Domain Specific Software Engineering (DSSE)

  Domain Specific Software Engineering (DSSE) believes that creating every application from nothing is not advantageous when existing systems can be leveraged to create the same application in less time and with less cost.  This belief is founded in the idea that forcing applications to recreate exiting functionality is unnecessary. Why would we build a better wheel when we already have four really good and proven wheels? DSSE suggest that we take an existing wheel and just modify it to fit an existing need of a system. This allows developers to leverage existing codebases so that more time and expense are focused on creating more usable functionality compared to just creating more functionality. As an example, how many functions do we need to create to send an email when one can be created and used by all other applications within the existing domain? Key Factors of DSSE Domain Technology Business A Domain in DSSE is used to control the problem space for a project. This control allows for applications to be developed within specific constrains that focus development is to a specific direction.Technology in DSSE offers a variety of technological solutions to be applied within a domain. Technology Examples: Tools Patterns Architectures & Styles Legacy Systems Business is the motivator for any originations to use DSSE in there software development process. Business reason to use DSSE: Minimize Costs Maximize market and Profits When these factors are used in combination additional factors and benefits can be found. Result of combining Key Factors of DSSE Domain + Business  = Corporate Core Competencies Domain expertise improved by market and business expertise Domain + Technology = Application Family Architectures All possible technological solutions to problems in a domain without any business constraints.  Business + Technology =  Domain independent infrastructure Tools and techniques for building systems  independent of all domains  Domain + Business + Technology = Domain-specific software engineering Applies technology to domain related goals in the context of business and market expertise

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• How to use lists in equivalence partitioning?

  - by KhDonen

  I have read that equivalence partitioning can be used typically for intervals or lists, e.g. I assume it can be used for every set of inputs. Anyway if the requirement says that allowed colors are (RED,BLUE,BLACK, GREEN), I cannot treat them like a list, right? I mean, testing one of them would not be enough because developers most likely used some switch-case and thus it is not real "set" where one could represent also the others. So how it is meant with lists? Also what is not that clear to me, I do not think it is always possible to do the initial partioning and then design the test cases. What about checking two lines intersection: Y=MX+C. (two inputs) 1) The lines are paraller. M1=M1 but C1 must be different from C2. 2) Lines are intersecting. M1 must be different from M2. 3) Coincident. The are the same. How can I use partitioning here? THis is actually taken from a book and it says that these sets are eq.classes.

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• Resized Ubuntu 14.04 partition will not boot

  - by user292577

  First, a little background info: I intended to install Ubuntu alongside OS X, but I accidentally erased my entire hard drive and was left with Ubuntu alone. Yesterday, I finally tried to create a desperate partition and OS X. I successfully shrank my Ubuntu partition and created ~40 GB of free space. I used gparted to do this. At first I tried to use Internet Recovery to install OS X on the unallocated space I had created, but discovered I couldn't. I went back to gparted and created a FAT partition with that space. I'm pretty sure I actually did this using my Ubuntu partition on my hard drive (the one I had just shrunken), rather than the USB live boot I had used to shrink it. Therefore, at this point, I think my Ubuntu partition was still functioning properly. I went back to internet recovery and used disk utility to turn the FAT partition into a Mac OS Extended (Journaled) [HFS/HFS+] partition. I believe this is probably where the problem occurred. I successfully reinstalled OS X and found it to be fully functioning. However, when I tried to boot back into the Ubuntu partition all I got was a black screen with a little white cursor (it looks similar to a terminal screen/the Mac DFU mode, but I can't type anything into it. Is there anything I can do to repair my Ubuntu partition? If not, can I at least recover the data from it? Thank you for any help.

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• Cocos2D: Change animation based on joystick direction

  - by Blade

  I'm trying to get my figure to look in the right directions, based on the input of the joystick. So if I tilt left it looks left and the left animation is used, if I used right, it looks right and right animation is used, if up, then up, down, down and so on. I just get animation for front and back. Also if I press up I see the back of the figure correctly, but it won't go back into the original state when I don't press up anymore. -(void)applyJoystick:(SneakyJoystick *)aJoystick forTimeDelta:(float) deltaTime { CGPoint scaledVelocity = ccpMult(aJoystick.velocity, 128.0f); CGPoint oldPosition = [self position]; CGPoint newPosition = ccp(oldPosition.x + scaledVelocity.x * deltaTime, oldPosition.y + scaledVelocity.y * deltaTime); [self setPosition:newPosition]; id action = nil; int extra = 50; if ((int) aJoystick.degrees > 180 - extra && aJoystick.degrees < 180 + extra) { action = [CCAnimate actionWithAnimation:walkingAnimLeft restoreOriginalFrame:NO]; } else if ((int) aJoystick.degrees > 360 - extra && aJoystick.degrees < 360 + extra) { action = [CCAnimate actionWithAnimation:walkingAnimRight restoreOriginalFrame:NO]; } else if ((int) aJoystick.degrees > 90 - extra && aJoystick.degrees < 90 + extra) { action = [CCAnimate actionWithAnimation:walkingAnimBack restoreOriginalFrame:NO]; } else if ((int) aJoystick.degrees > 270 - extra && aJoystick.degrees < 270 + extra) { action = [CCAnimate actionWithAnimation:walkingAnimFront restoreOriginalFrame:NO]; } if (action != nil) { [self runAction:action]; } } }

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• how to recover lost partitions data

  - by TheJoester

  I have a 2TB SATA drive that was being used as file storage on my UBUNTU computer. I was re-imaging my windows box so I used that drive to back up some files to it. I did this by taking the drive from my windows PC and putting it in my UBUNTU PC, mounted it and copied the files over. After the windows refresh I thought it would be easier to take the 2 TB drive and dock it in the external dock my Windows case has built in. Anyway it would recognize in BIOS but windows would not see it (because it was EXT3 or EXT4) so when I went into the disk manager it advised me the drive needed to be initialized. Me not thinking I initialized it as a GUID Partition table. Now it sees it as a blank drive, even in UBUNTU. I have done nothing else to write or change the drive. I was wondering if there is a qay to repair the old partitioning and get access to my files back? many thanks! EDIT: I followed the instructions in the link @kniwor sent me. I used the command sudo gpart -W /dev/sda /dev/sda and here was the result: Guessed primary partition table: Primary partition(1) type: 007(0x07)(OS/2 HPFS, NTFS, QNX or Advanced UNIX) size: 0mb #s(1) s(2861671176-2861671176) chs: (1023/254/63)-(1023/254/63)d (178130/202/1)-(178130/202/1)r Primary partition(2) type: 007(0x07)(OS/2 HPFS, NTFS, QNX or Advanced UNIX) size: 0mb #s(1) s(3484550160-3484550160) chs: (1023/254/63)-(1023/254/63)d (216903/55/1)-(216903/55/1)r Primary partition(3) type: 000(0x00)(unused) size: 0mb #s(0) s(0-0) chs: (0/0/0)-(0/0/0)d (0/0/0)-(0/0/0)r Primary partition(4) type: 000(0x00)(unused) size: 0mb #s(0) s(0-0) chs: (0/0/0)-(0/0/0)d (0/0/0)-(0/0/0)r Not sure it found what I wanted. suggestions?

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• Multisystem Script won't work! "Syntax error:redirection unexpected" Worked 2 days ago?

  - by user74005

  this is my first question. I use Multisystem all of the time and have installed it on both Kubuntu and Ubuntu and have used it with no issues. I wiped my hard drive to try some new OSs I'm now using the exact same OS (Ubuntu 12.05) I used to load my USB stick to begin with and now I'm getting this ridiculous syntax error. I know the script is correct, I'm following the exact same steps I used to get to this point and I'm getting different results ?!?! I'm very confused by this. I have no clue how to begin addressing this issue. I get the same syntax error on Kubuntu now too, which did have multisystem installed. I run "sh install-depot-multisystem.sh" and get "Syntax error:redirection unexpected", this worked literally 2 days ago. The only thing that has changed is my face has grown some more facial hair and my head hurts from bangin it against the wall over this issue. The OS is exactly the same, the script is the same; but now it won't install. I'm lost and really hoping someone can help. Append Just to append to this a bit https://lists.ubuntu.com/archives/ub...er/000264.html I needed to do a chmod 777 on the script, I'm still getting a syntax error on Kubuntu...but it did install successfully. I'll mark this as resovled! Thanks anyway, I'll try to spruse up on my Linux skills.

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• Poor performance after reinstalling to a USB drive

  - by anonymous

  I am currently running Ubuntu 11.10 off of a SanDisk 16GB USB. I installed it using a Live USB with the following partition configuration: 6GB Primary /dos FAT32 5GB Logical / ext4 5GB Logical /home ext4 I don't have a hard disk, and don't see myself getting one anytime soon. I rely solely on this 16GB, and two other 4GB USBs, one of which I used as the LiveUSB. I bring the USBs around, and even use the install at work. I previously used an install that used a swap file. It functioned fine for the most part, save for a few slow moments, but I came across this post, and it got me thinking about my USB's life, so I reinstalled with the current config. My problem now is that it is slower. Applications like Firefox would hang more often. In my previous setup (the automatically partitioned setup), Firefox would start hanging if I was running an unzip or install task on the same partition as /. Now however, it would hang if I had another window open i.e. the system settings window. My guess is that it may have something to do with the swap file or the install being on a Logical partition rather than a Primary partition, but I don't know. Any insight as to why it has slowed down?

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• Random greyed unresponsive screen on netbook

  - by user643722

  I love my Asus Eee PC 1000 Ubuntu 12.04 netbook, but I have a little problem. As I use it, the screen will randomly turn grey and become unresponsive. I can then only wait, until perhaps 10-60 secs. later, when I can interact again. Only the bar at the top of my screen retains its colour throughout. I thought it might be Firefox, as I have a lot of tabs open. I installed Chromium, used it instead, and the problem remained. A while back I upgraded from 1 to 2 Gb RAM. So, I thought recently, maybe I should increase the swap-space. I have 738Mb of 7.2Gb free on root; and 2Gb of 28Gb free on my home drive. I bought a 32 Gb SD Card and assigned 4Gb to swap space. cat /proc/swaps reports that the partition is being used. Alas the problem remains. Does anyone know what's wrong with my machine? The SD Card has changed my machine somewhat, but the greying still happens. I ran free -m shortly after another episode, and received: total used free shared buffers cached Mem: 2004 1731 272 0 370 769 -/+ buffers/cache: 591 1412 Swap: 4073 0 4073 Update: Using 'top', I can see that compiz uses about 43% of the CPU (#1 position) when the greying occurs. After the greying, compiz drops back down to its usual 8% of CPU.

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• ant ftp doesn't download files in subdirectories

  - by Kristof Neirynck

  Hello, I'm trying to download files in subdirectories from an ftp server with ant. The exact set of files is known. Some of them are in subdirectories. Ant only seems to download the ones in the root directory. It does work if I download all files without listing them. The first ftp action should do the exact same thing as the second. Instead it complains about "Hidden files" and seems to prefix the paths with "\\". Does anyone know what's wrong here? Is this a bug in commons-net? build.xml <?xml version="1.0" encoding="utf-8"?> <project name="example" default="example" basedir="."> <taskdef name="ftp" classname="org.apache.tools.ant.taskdefs.optional.net.FTP" /> <target name="example"> <!-- 2 files retrieved --> <ftp action="get" verbose="true" server="localhost" userid="example" password="example"> <fileset dir="downloads" casesensitive="false" includes="root1.txt,root2.txt,a/a.txt,a/b/ab.txt,c/c.txt" /> </ftp> <!-- 5 files retrieved --> <ftp action="get" verbose="true" server="localhost" userid="example" password="example"> <fileset dir="downloads" casesensitive="false" includes="**/*" /> </ftp> </target> </project> run_ant.bat @ECHO OFF PUSHD %~dp0 SET CLASSPATH= SET ANT_HOME=C:\apache-ant-1.8.0 SET ant=%ANT_HOME%\bin\ant.bat SET antoptions=-nouserlib -noclasspath -d SET ftpjars=^ -lib lib\jakarta-oro-2.0.8.jar ^ -lib lib\commons-net-2.0.jar CALL %ant% %antoptions% %ftpjars% > output.txt POPD output.txt Unable to locate tools.jar. Expected to find it in C:\PROGRA~1\Java\jre6\lib\tools.jar Apache Ant version 1.8.0 compiled on February 1 2010 Trying the default build file: build.xml Buildfile: G:\ftp\build.xml Adding reference: ant.PropertyHelper Detected Java version: 1.6 in: C:\PROGRA~1\Java\jre6 Detected OS: Windows 7 Adding reference: ant.ComponentHelper Setting ro project property: ant.file -> G:\ftp\build.xml Setting ro project property: ant.file.type -> file Adding reference: ant.projectHelper Adding reference: ant.parsing.context Adding reference: ant.targets parsing buildfile G:\ftp\build.xml with URI = file:/G:/ftp/build.xml Setting ro project property: ant.project.name -> example Adding reference: example Setting ro project property: ant.project.default-target -> example Setting ro project property: ant.file.example -> G:\ftp\build.xml Setting ro project property: ant.file.type.example -> file Project base dir set to: G:\ftp +Target: +Target: example Adding reference: ant.LocalProperties parsing buildfile jar:file:/C:/apache-ant-1.8.0/lib/ant.jar!/org/apache/tools/ant/antlib.xml with URI = jar:file:/C:/apache-ant-1.8.0/lib/ant.jar!/org/apache/tools/ant/antlib.xml from a zip file Class org.apache.tools.ant.taskdefs.optional.net.FTP loaded from parent loader (parentFirst) Setting ro project property: ant.project.invoked-targets -> example Attempting to create object of type org.apache.tools.ant.helper.DefaultExecutor Adding reference: ant.executor Build sequence for target(s) `example' is [example] Complete build sequence is [example, ] example: [ftp] Opening FTP connection to localhost [ftp] connected [ftp] logging in to FTP server [ftp] login succeeded [ftp] getting files fileset: Setup scanner in dir G:\ftp\downloads with patternSet{ includes: [root1.txt, root2.txt, a/a.txt, a/b/ab.txt] excludes: [] } will try to cd to A where a directory called a exists testing case sensitivity, attempting to cd to A remote system is case sensitive : false [ftp] Hidden file \\a\b\ assumed to not be a symlink. filelist map used in listing files filelist map used in listing files [ftp] Hidden file \\a\b\ assumed to not be a symlink. filelist map used in listing files filelist map used in listing files filelist map used in listing files filelist map used in listing files filelist map used in listing files [ftp] Hidden file \\a\a.txt assumed to not be a symlink. filelist map used in listing files [ftp] Hidden file \\a\a.txt assumed to not be a symlink. filelist map used in listing files filelist map used in listing files filelist map used in listing files [ftp] transferring root1.txt to G:\ftp\downloads\root1.txt [ftp] File G:\ftp\downloads\root1.txt copied from localhost [ftp] transferring root2.txt to G:\ftp\downloads\root2.txt [ftp] File G:\ftp\downloads\root2.txt copied from localhost [ftp] 2 files retrieved [ftp] disconnecting [ftp] Opening FTP connection to localhost [ftp] connected [ftp] logging in to FTP server [ftp] login succeeded [ftp] getting files fileset: Setup scanner in dir G:\ftp\downloads with patternSet{ includes: [**/*] excludes: [] } will try to cd to A where a directory called a exists testing case sensitivity, attempting to cd to A remote system is case sensitive : false [ftp] transferring a\a.txt to G:\ftp\downloads\a\a.txt [ftp] File G:\ftp\downloads\a\a.txt copied from localhost [ftp] transferring a\b\ab.txt to G:\ftp\downloads\a\b\ab.txt [ftp] File G:\ftp\downloads\a\b\ab.txt copied from localhost [ftp] transferring c\c.txt to G:\ftp\downloads\c\c.txt [ftp] File G:\ftp\downloads\c\c.txt copied from localhost [ftp] transferring root1.txt to G:\ftp\downloads\root1.txt [ftp] File G:\ftp\downloads\root1.txt copied from localhost [ftp] transferring root2.txt to G:\ftp\downloads\root2.txt [ftp] File G:\ftp\downloads\root2.txt copied from localhost [ftp] 5 files retrieved [ftp] disconnecting BUILD SUCCESSFUL Total time: 0 seconds server log (000153) 7/05/2010 19:46:12 - (not logged in) (127.0.0.1)> Connected, sending welcome message... (000153) 7/05/2010 19:46:12 - (not logged in) (127.0.0.1)> 220-FileZilla Server version 0.9.34 beta (000153) 7/05/2010 19:46:12 - (not logged in) (127.0.0.1)> 220-written by Tim Kosse ([email protected]) (000153) 7/05/2010 19:46:12 - (not logged in) (127.0.0.1)> 220 Please visit http://sourceforge.net/projects/filezilla/ (000153) 7/05/2010 19:46:12 - (not logged in) (127.0.0.1)> USER example (000153) 7/05/2010 19:46:12 - (not logged in) (127.0.0.1)> 331 Password required for example (000153) 7/05/2010 19:46:12 - (not logged in) (127.0.0.1)> PASS ******* (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 230 Logged on (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> TYPE I (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 200 Type set to I (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> SYST (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 215 UNIX emulated by FileZilla (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PORT 127,0,0,1,207,232 (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 200 Port command successful (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> LIST (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 150 Opening data channel for directory list. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 226 Transfer OK (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD A (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/A" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD a (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/a" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD b (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/a/b" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD //a/b (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/a/b" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/a/b" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PORT 127,0,0,1,207,233 (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 200 Port command successful (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> LIST (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 150 Opening data channel for directory list. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 226 Transfer OK (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PORT 127,0,0,1,207,234 (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 200 Port command successful (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> LIST (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 150 Opening data channel for directory list. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 226 Transfer OK (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD //\\a\b\ (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/a/b" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/a/b" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD //\\a\b\ (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/a/b" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/a/b" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD a (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/a" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD //a (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/a" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/a" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PORT 127,0,0,1,207,235 (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 200 Port command successful (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> LIST (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 150 Opening data channel for directory list. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 226 Transfer OK (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PORT 127,0,0,1,207,236 (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 200 Port command successful (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> RETR root1.txt (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 150 Opening data channel for file transfer. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 226 Transfer OK (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PORT 127,0,0,1,207,237 (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 200 Port command successful (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> RETR root2.txt (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 150 Opening data channel for file transfer. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 226 Transfer OK (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> QUIT (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 221 Goodbye (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> disconnected. (000154) 7/05/2010 19:46:12 - (not logged in) (127.0.0.1)> Connected, sending welcome message... (000154) 7/05/2010 19:46:12 - (not logged in) (127.0.0.1)> 220-FileZilla Server version 0.9.34 beta (000154) 7/05/2010 19:46:12 - (not logged in) (127.0.0.1)> 220-written by Tim Kosse ([email protected]) (000154) 7/05/2010 19:46:12 - (not logged in) (127.0.0.1)> 220 Please visit http://sourceforge.net/projects/filezilla/ (000154) 7/05/2010 19:46:12 - (not logged in) (127.0.0.1)> USER example (000154) 7/05/2010 19:46:12 - (not logged in) (127.0.0.1)> 331 Password required for example (000154) 7/05/2010 19:46:12 - (not logged in) (127.0.0.1)> PASS ******* (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 230 Logged on (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> TYPE I (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 200 Type set to I (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> SYST (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 215 UNIX emulated by FileZilla (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> PORT 127,0,0,1,207,239 (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 200 Port command successful (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> LIST (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 150 Opening data channel for directory list. (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 226 Transfer OK (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD A (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/A" is current directory. (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> PORT 127,0,0,1,207,240 (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 200 Port command successful (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> LIST (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 150 Opening data channel for directory list. (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 226 Transfer OK (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> CWD / (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> CWD a (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 250 CWD successful. "/a" is current directory. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> PORT 127,0,0,1,207,241 (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 200 Port command successful (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> LIST (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 150 Opening data channel for directory list. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 226 Transfer OK (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> CWD //a/ (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 250 CWD successful. "/a" is current directory. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> CWD b (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 250 CWD successful. "/a/b" is current directory. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> PORT 127,0,0,1,207,242 (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 200 Port command successful (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> LIST (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 150 Opening data channel for directory list. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 226 Transfer OK (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> CDUP (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 200 CDUP successful. "/a" is current directory. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> CDUP (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 200 CDUP successful. "/" is current directory. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> CWD / (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> CWD c (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 250 CWD successful. "/c" is current directory. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> PORT 127,0,0,1,207,243 (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 200 Port command successful (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> LIST (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 150 Opening data channel for directory list. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 226 Transfer OK (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> CDUP (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 200 CDUP successful. "/" is current directory. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> CDUP (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 200 CDUP successful. "/" is current directory. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> CWD / (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> PORT 127,0,0,1,207,244 (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 200 Port command successful (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> RETR a/a.txt (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 150 Opening data channel for file transfer. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 226 Transfer OK (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> PORT 127,0,0,1,207,245 (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 200 Port command successful (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> RETR a/b/ab.txt (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 150 Opening data channel for file transfer. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 226 Transfer OK (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> PORT 127,0,0,1,207,246 (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 200 Port command successful (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> RETR c/c.txt (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 150 Opening data channel for file transfer. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 226 Transfer OK (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> PORT 127,0,0,1,207,247 (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 200 Port command successful (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> RETR root1.txt (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 150 Opening data channel for file transfer. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 226 Transfer OK (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> PORT 127,0,0,1,207,248 (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 200 Port command successful (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> RETR root2.txt (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 150 Opening data channel for file transfer. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 226 Transfer OK (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> QUIT (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 221 Goodbye (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> disconnected.

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• asp.net image aspect ratio help

  - by StealthRT

  Hey all, i am in need of some help with keeping an image aspect ratio in check. This is the aspx code that i have to resize and upload an image the user selects. <%@ Page Trace="False" Language="vb" aspcompat="false" debug="true" validateRequest="false"%> <%@ Import Namespace=System.Drawing %> <%@ Import Namespace=System.Drawing.Imaging %> <%@ Import Namespace=System %> <%@ Import Namespace=System.Web %> <SCRIPT LANGUAGE="VBScript" runat="server"> const Lx = 500 ' max width for thumbnails const Ly = 60 ' max height for thumbnails const upload_dir = "/uptest/" ' directory to upload file const upload_original = "sample" ' filename to save original as (suffix added by script) const upload_thumb = "thumb" ' filename to save thumbnail as (suffix added by script) const upload_max_size = 512 ' max size of the upload (KB) note: this doesn't override any server upload limits dim fileExt ' used to store the file extension (saves finding it mulitple times) dim newWidth, newHeight as integer ' new width/height for the thumbnail dim l2 ' temp variable used when calculating new size dim fileFld as HTTPPostedFile ' used to grab the file upload from the form Dim originalimg As System.Drawing.Image ' used to hold the original image dim msg ' display results dim upload_ok as boolean ' did the upload work ? </script> <% randomize() ' used to help the cache-busting on the preview images upload_ok = false if lcase(Request.ServerVariables("REQUEST_METHOD"))="post" then fileFld = request.files(0) ' get the first file uploaded from the form (note:- you can use this to itterate through more than one image) if fileFld.ContentLength > upload_max_size * 1024 then msg = "Sorry, the image must be less than " & upload_max_size & "Kb" else try originalImg = System.Drawing.Image.FromStream(fileFld.InputStream) ' work out the width/height for the thumbnail. Preserve aspect ratio and honour max width/height ' Note: if the original is smaller than the thumbnail size it will be scaled up If (originalImg.Width/Lx) > (originalImg.Width/Ly) Then L2 = originalImg.Width newWidth = Lx newHeight = originalImg.Height * (Lx / L2) if newHeight > Ly then newWidth = newWidth * (Ly / newHeight) newHeight = Ly end if Else L2 = originalImg.Height newHeight = Ly newWidth = originalImg.Width * (Ly / L2) if newWidth > Lx then newHeight = newHeight * (Lx / newWidth) newWidth = Lx end if End If Dim thumb As New Bitmap(newWidth, newHeight) 'Create a graphics object Dim gr_dest As Graphics = Graphics.FromImage(thumb) ' just in case it's a transparent GIF force the bg to white dim sb = new SolidBrush(System.Drawing.Color.White) gr_dest.FillRectangle(sb, 0, 0, thumb.Width, thumb.Height) 'Re-draw the image to the specified height and width gr_dest.DrawImage(originalImg, 0, 0, thumb.Width, thumb.Height) try fileExt = System.IO.Path.GetExtension(fileFld.FileName).ToLower() originalImg.save(Server.MapPath(upload_dir & upload_original & fileExt), originalImg.rawformat) thumb.save(Server.MapPath(upload_dir & upload_thumb & fileExt), originalImg.rawformat) msg = "Uploaded " & fileFld.FileName & " to " & Server.MapPath(upload_dir & upload_original & fileExt) upload_ok = true catch msg = "Sorry, there was a problem saving the image." end try ' Housekeeping for the generated thumbnail if not thumb is nothing then thumb.Dispose() thumb = nothing end if catch msg = "Sorry, that was not an image we could process." end try end if ' House Keeping ! if not originalImg is nothing then originalImg.Dispose() originalImg = nothing end if end if %> What i am looking for is a way to just have it go by the height of what i set it: const Ly = 60 ' max height for thumbnails And have the code for the width just be whatever. So if i had an image... say 600 x 120 (w h) and i used photoshop to change just the height, it would keep it in ratio and have it 300 x 60 (w x h). Thats what i am looking to do with this code here. However, i can not think of a way to do this (or to just leave a wildcard for the width setting. Any help would be great :o) David

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