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• How do I get a different type of scrollbars in 12.04? [closed]

  - by Joseph Garvin

  Possible Duplicate: How do I disable overlay scrollbars? By default 12.04 uses overlay scroll bars that do not suit my taste, and every method I've found so far of disabling them makes them broken in a different way. When I was using 11.10 this wasn't a problem because I could still change the GTK theme. In 12.04, the Appearance settings only contain a few stock themes, and other than the special purpose contrast ones they all have the overlay scroll bars. If I aptitude search gtk3 | grep theme I get no results so there appears to be no packaged alternative either. Most suggestions I've seen for disabling the overlay scroll bars involve uninstalling packages or editing files as root. I want to disable them just for the current user, not for everyone on the whole box; as should be the case for any theme/display setting. There is a gsettings command that temporarily disables the overlay scrollbars just for the current user, but this has two problems of its own: The setting doesn't stick after log off. Because who would want to save settings? The scroll bars put in place have no contrast. They have a black scroller on a black background and are completely unusable. In short what I'd like to know is how to disable overlay scroll bars such that: My preference is user specific. My preference is actually saved. The scroller can actually be seen against the background without having to use a special high contrast theme that makes my whole desktop look like a negative photo from Tron.

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• Change default code page of Windows console to UTF-8

  - by Regent

  Currently I'm running Windows 7 x64 and usually I want all console tools to work with UTF-8 rather than with default code page 850. Running chcp 65001 in the command prompt prior to use of any tools helps but is there any way to set is as default code page? Update: Changing HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Nls\CodePage\OEMCP value to 65001 appear to make the system unable to boot in my case. Proposed change of HKEY_LOCAL_MACHINE\Software\Microsoft\Command Processor\Autorun to @chcp 65001>nul served just well for my purpose. (thanks to Ole_Brun)

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• Why do Google search results include pages disallowed in robots.txt?

  - by Ilmari Karonen

  I have some pages on my site that I want to keep search engines away from, so I disallowed them in my robots.txt file like this: User-Agent: * Disallow: /email Yet I recently noticed that Google still sometimes returns links to those pages in their search results. Why does this happen, and how can I stop it? Background: Several years ago, I made a simple web site for a club a relative of mine was involved in. They wanted to have e-mail links on their pages, so, to try and keep those e-mail addresses from ending up on too many spam lists, instead of using direct mailto: links I made those links point to a simple redirector / address harvester trap script running on my own site. This script would return either a 301 redirect to the actual mailto: URL, or, if it detected a suspicious access pattern, a page containing lots of random fake e-mail addresses and links to more such pages. To keep legitimate search bots away from the trap, I set up the robots.txt rule shown above, disallowing the entire space of both legit redirector links and trap pages. Just recently, however, one of the people in the club searched Google for their own name and was quite surprised when one of the results on the first page was a link to the redirector script, with a title consisting of their e-mail address followed by my name. Of course, they immediately e-mailed me and wanted to know how to get their address out of Google's index. I was quite surprised too, since I had no idea that Google would index such URLs at all, seemingly in violation of my robots.txt rule. I did manage to submit a removal request to Google, and it seems to have worked, but I'd like to know why and how Google is circumventing my robots.txt like that and how to make sure that none of the disallowed pages will show up in their search results. Ps. I actually found out a possible explanation and solution, which I'll post below, while preparing this question, but I thought I'd ask it anyway in case someone else might have the same problem. Please do feel free to post your own answers. I'd also be interested in knowing if other search engines do this too, and whether the same solutions work for them also.

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• Mailman aggregate mailing lists

  - by s1nny

  Using CENTOS 5.10, WHM, CpanelX I'm setting up mailing lists for my company (microsoft exchange costs too much for the number of users we have). So I've got a few mailing lists set up right now @Naples, @Cayman, @ACK, @Managers etc which are all set up and working nicely. Now I need to create an aggregate list, @Stores, which sends to other lists, in this case @Naples, @Cayman and @ACK and leaving out @Managers. I keep getting authorization requests from each store list when I send to @Stores but if I send to each store list individually its fine. I've got them all set up to "accept non member postings for which no explicit action is defined", as well as set "accept_these_nonmembers" to ^.*

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• How do I transfer videos from DV camera to divx?

  - by Ward

  I have a videocamera that uses mini-dv tapes. In the past, I've transferred the files and made DVDs, but that was time- and disk-space- consuming. I wanted to find new tools and to figure out how to convert the videos to something smaller like divx but I didn't know enough about all the different formats to answer a previous question. Well, now I've done a bunch of research and I understand some of the details of video encoding, and in the process I wrote up some notes on the different formats involved in going from a DV videocam to divx or H.264 They're a bit rambling, but in case it's of any use, I'm going to post them as an answer. I'd be very interested in anyone else's answer as well.

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• Get the MAC addresses of all the machines connected to a LAN when NO machines have got an IP address yet

  - by JtheRocker

  Here is the real scenario. I have say 4 machines not having any IP address yet connected to a switch. In one of the machines (OS=CentOS), I would install a DHCP server and would provide the other machines IP addresses. Prior to assigning them IP addresses, I need to get the MAC address of each of the machines that I would assign IP addresses to. So, my question here is how to I get the MAC addresses of all the machines connected to a switch when NO machine has got any IP address yet? It's mandatory for my use case that I won't be having any IP addresses before the MAC addresses. -Thanks

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• Dell XPS M1330 - power cable pulled by accident and now it won't turn on

  - by jim

  I have a similar problem to what has been posted on this site about when I plug in my Laptop adapter the green light comes on as expected; but, when I plug it into the laptop it goes out. In my case, I know it's not the adapter because I have 2 and they both experience the same issue. I'm quite certain the problem is a short in the laptop. I was using the laptop today and the power cord was pulled out by accident and now i'm into this predicament. How or what do I check on the laptop to isolate the problem? Thanks!

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• Are small amounts of functional programming understandable by non-FP people?

  - by kd35a

  Case: I'm working at a company, writing an application in Python that is handling a lot of data in arrays. I'm the only developer of this program at the moment, but it will probably be used/modified/extended in the future (1-3 years) by some other programmer, at this moment unknown to me. I will probably not be there directly to help then, but maybe give some support via email if I have time for it. So, as a developer who has learned functional programming (Haskell), I tend to solve, for example, filtering like this: filtered = filter(lambda item: included(item.time, dur), measures) The rest of the code is OO, it's just some small cases where I want to solve it like this, because it is much simpler and more beautiful according to me. Question: Is it OK today to write code like this? How does a developer that hasn't written/learned FP react to code like this? Is it readable? Modifiable? Should I write documentation like explaining to a child what the line does? # Filter out the items from measures for which included(item.time, dur) != True I have asked my boss, and he just says "FP is black magic, but if it works and is the most efficient solution, then it's OK to use it." What is your opinion on this? As a non-FP programmer, how do you react to the code? Is the code "googable" so you can understand what it does? I would love feedback on this :) Edit: I marked phant0m's post as answer, because he gives good advice on how to write the code in a more readable way, and still keep the advantages. But I would also like to recommend superM's post because of his viewpoint as a non-FP programmer.

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• How can I redirect all files in a directory that doesn't conform to a certain filename structure?

  - by user18842

  I have a website where a previous developer had updated several webpages. The issue is that the developer had made each new webpage with new filenames, and deleted the old filenames. I've worked with .htaccess redirects for a few months now, and have some understanding of the usage, however, I am stumped with this task. The old pages were named like so: www.domain.tld/subdir/file.html The new pages are named: www.domain.tld/subdir/file-new-name.html The first word of all new files is the exact name of the old file, and all new files have the same last 2 words. www.domain.tld/subdir/file1-new-name.html www.domain.tld/subdir/file2-new-name.html www.domain.tld/subdir/file3-new-name.html ect. We also need to be able to access the url: www.domain.tld/subdir/ The new files have been indexed by google (the old urls cause 404s, and need redirected to the new so that google will be friendly), and the client wants to keep the new filenames as they are more descriptive. I've attempted to redirect it in many different ways without success, but I'll show the one that stumps me the most RewriteBase / RewriteCond %{THE_REQUEST} !^subdir/.*\-new\-name\.html RewriteCond %{THE_REQUEST} !^subdir/$ RewriteRule ^subdir/(.*)\.html$ http://www.domain.tld/subdir/$1\-new\-name\.html [R=301,NC] When visiting www.domain.tld/subdir/file1.html in the browser, this causes a 403 Forbidden error with a url like so: www.domain.tld/subdir/file1-new-name-new-name-new-name-new-name-new-name-new-name-new-name-new-name-new-name-new-name-new-name-new-name-new-name.html I'm certain it's probably something simple that I'm overlooking, can someone please help me get a proper redirect? Thanks so much in advance! EDIT I've also got all the old filenames saved on a separate document in case I need them set up like the following example: (file(1|2|3|4|5)|page(1|2|3|4|5)|a(l(l|lowed|ter)|ccept)

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• Please recommend the best tools to build a test plan management tool

  - by fzkl

  I have mostly worked on hardware testing in my professional career and would like to get onto the software development side. I thought working on a practically usable project will help motivate me and help acquire some skills. I have decided to build a test plan management tool for the QA team I work in (We use excel sheets!). The test plan management tool should be browser based and should support this: There would be many test plans, each test plan having test sets, test sets having test cases and test cases having instructions, attachments and Pass/fail status marking and bug info in case of failure. It should also have an export to excel option. I have a visual picture of the tool I am looking to build but I don't have enough experience to figure our where to start. My current programming skills are limited to C and shell programming and I want to pick up python. What tools (programming language, database and anything else?) would you recommend for me to get this done? Also what are the key concepts in the recommended programming language that I should focus on to build a browser based tool like this?

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• Software for defining rules for folder permissions and monitoring deviations

  - by Kjensen

  Let's say a company has a large number of users, and each user has a home area. On each share used for home area folders, I would like to define some rules saying who is supposed to have which permissions on the folder. Then I would like to audit automatically, that this is actually the case and get some sort of report on deviations. So a rule for \MegaServer\Home01 could be defined something like: Domain Admins - Full Control Backup Agent - Read [Home folder owner] - Full Control I am talking about Windows platform and Windows servers, although I think it would most likely also work for *nix machines that expose Windows shares. Does software like this exist? I could roll my own basic version, but if something already exists, that is usually a better option. I am aware of tools to make displaying permissions easier (AccessEnum, DumpSec), but that is not what I am looking for.

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• Extensions disappear when I close and open Google Chrome

  - by PavanM

  I am running the latest version of Google Chrome 23.0.1271.97 (Official Build 171054) m on Windows 7. Any new extension I install simply disappears(not disabled, total disappearance) once I close and re-start google chrome. This is not happening to one of my old extension. It stays there across chrome re-starts. I tried everything google help suggested- I created new user profile by renaming the Defaults folder I checked for any permission change that the extensions might have undergone. This is not the case. I am not running in developer mode. This happens when I close ALL instances of google chrome. Even if one instance of chrome is running, this doesn't happen. But I cant have an instance of Google Chrome always running :( I even reported the issue to Google Chrome team to no avail and new.crbug.com is offline. And I skimmed through many threads opened for the same issue only to find souls like me. SE is my last resort :)

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• How do I interpolate air drag with a variable time step?

  - by Valentin Krummenacher

  So I have a little game which works with small steps, however those steps vary in time, so for example I sometimes have 10 Steps/second and then I have 20 Steps/second. This changes automatically depending on how many steps the user's computer can take. To avoid inaccurate positioning of the game's player object I use y=v0*dt+g*dt^2/2 to determine my objects y-position, where dt is the time since the last step, v0 is the velocity of my object in the beginning of my step and g is the gravity. To calculate the velocity in the end of a step I use v=v0+g*dt what also gives me correct results, independent of whether I use 2 steps with a dt of for example 20ms or one step with a dt of 40ms. Now I would like to introduce air drag. For simplicity's sake I use a=k*v^2 where a is the air drag's acceleration (I am aware that it would usually result in a force, but since I assume 1kg for my object's mass the force is the same as the resulting acceleration), k is a constant (in this case I'm using 0.001) and v is the speed. Now in an infinitely small time interval a is k multiplied by the velocity in this small time interval powered by 2. The problem is that v in the next time interval would depend on the drag of the last which again depends on the v of the last interval and so on... In other words: If I use a=k*v^2 I get different results for my position/velocity when I use 2 steps of 20ms than when I use one step of 40ms. I used to have this problem for my position too, but adding +g*dt^2/2 to the formula for my position fixed the problem since it takes into account that the position depends on the velocity which changes slightly in every infinitely small time interval. Does something like that exist for air drag too? And no, I dont mean anything like Adding air drag to a golf ball trajectory equation or similar, for that kind of method only gives correct results when all my steps are the same. (I hope you can understand my intermediate english, it's not my main language so I would like to say sorry for all the silly mistakes I might have made in my question)

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• Unable to do Port Forwarding in Virtual Box

  - by dewbot

  I'm using Mac OS X 10.6. I have installed Virtual Box 4.1.0 in it. My Guest OS is Ubuntu Server 11.04. I have added a rule in Port Forwarding in Virtual Box - "guestssh" TCP 127.0.1.1 8080 127.0.0.1 1337 Inside Guest OS I'm running nodejs server. Code is nothing but simple helloworld code found on their site http://nodejs.org/. In short I'm running server on 127.0.0.1 on 1337 Port. Now according to rule I have given, from Host Machine all the requests for 127.0.1.1:8080 should be forwarded to 127.0.0.1:1337 of Guest OS. From Host I'm doing curl http://127.0.1.1:8080 and I'm getting curl: (7) couldn't connect to host Is there something am I doing wrong? Note- Don't give me suggestion to do ssh n all. As my ISP does not provide Internal LAN so its not possible in my case. All I can do it Port Forwarding.

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• If you favor "T *var", do you ever write "T*"?

  - by Roger Pate

  Thinking about where we place our asterisks; how do those that prefer to keep the "pointerness" away from the type and with the identifier (int *i) write code when the identifier is missing? void f(int*); // 1 void f(int *); // 2 The former seems much more common, no matter what your preference when with the identifier. Is this a special case? What makes it an exception? However, the first still isn't universal, because I have seen the latter style. Besides consistency along the lines of "there's always a space with the identifier, so we have one without", are there any other reasons to prefer it? What about casts or array and function types? How would you re-write these: (void*)var /*or*/ (void *)var int[3] /*or*/ int [3] // more relevant in C++ than C: Example<int[3]> void(int) /*or*/ void (int) // more relevant in C++ than C: std::function<void(int)> The latter two would rarely, if ever, be used in C, but are seen with C++ templates.

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• -w test on OS X gives command not found error

  - by RobV

  I'm writing a bash script which I'm testing on OS X though it will ultimately run on a standard Linux environment and running into a weird error. I have tests like this in my script: if [ ! -w $BP ]; then echo "'$1' not writable" exit 1 fi Which seems pretty sane to me and works fine under Linux but when trying to test on OS X I get the following error message: startSvr.sh: line 135: [: missing `]' startSvr.sh: line 135: -w: command not found So is this a case of OS X not supporting the -w test or is there some other reason this isn't working for me? e.g. environment

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• Why is 'grep -i' so slow? How to do it faster for ASCII?

  - by Vi.

  Consider: $ time lzop -d < tvtropes-index.lzo | egrep -B 5 '[Dd][eE][sS][cC][eE][nN][dD] ?[Ff][rR][oO][mM]' real 0m0.438s $ time lzop -d < tvtropes-index.lzo | egrep -B 5 'descend ?from' -i real 0m11.294s Both search case insensitively. Why is the -i version so slow? How do I make grep -i fast without entering things like [iI][nN] [tT][hH][iI][sS] [wW][aA][Yy]? For example, perl -ne 'print if /descend ?from/i' works fast, but '-B 5' is not as trivial to implement as in grep (as well as other options).

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• OS X: How to create a user account with access to the applications that she has installed only.

  - by pmurillo

  Till now, I've been the sole and proud owner of an iMac. I've always logged in as an administrator and I've also installed a bunch of software following the standard procedure of dragging and dropping it into the Applications folder. This is about to change, as sharing it with a friend makes a lot of sense now that I only have time to use the computer in the mornings, and she can only use it at nights. I thought this was going to be really easy: Just create a user account for her and that's all, I thought. Unfortunately, this is not the case. When she logins into the computer using her username and password, she has access to the same applications I've installed. Even the same applications that I setup to automatically start when I login start for her when she does. How can I setup a user that has only access to the applications that she has installed, but none of the ones installed by other users? Many thanks

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• BackupPC - are full backups really full when using rsync?

  - by mhost

  Hi, When you run a full backup in backuppc and you use rsync as the transfer method, does it actually transfer the full backup source? Or does it only transfer the changes? The docs seem to imply that it would transfer the full thing and only an incremental would transfer the changes. If this is the case, could I simply use incrementals only, and never do a full backup? The way the backups are stored (using hard links to make each incremental appear full), I would think that this would be the best method. Incrementals will only transfer the changes, yet each backup will appear full. Thanks.

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• Finite Numbers and ExplorerCanvas

  - by PhubarBaz

  I was working on my online mathematical graphing application, CloudGraph, and trying to make it work in IE. The app uses the HTML5 canvas element to draw graphs. Since IE doesn't support canvas yet I use ExplorerCanvas to provide that support for IE. However, it seems that when using excanvas, if you try to moveTo or drawTo a point that is not finite it loses it's mind and stops drawing anything else after that. I had no such problems in Firefox or Chrome so it took me awhile to figure out what was going on. Next I discovered that I needed a way to check if a variable was NaN or Inifinity or any other non-finite value so I could avoid calling moveTo() in that case. I started writing a long if statement, then I thought there has to be a better way. Sure enough there was. There just happens to be an isFinite() function built into Javascript just for this purpose. Who knew! It works great. Another difference I discovered with excanvas is that you must specify a starting point using a moveTo() when beginning a drawing path. Again, Chrome and Firefox are a lot more forgiving in this area so it took me a while to figure out why my lines weren't drawing. But, all is happy now and I'm a little wiser to the ways of the canvas.

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• automatically change the gnome-terminal "title" for the window

  - by tom

  Hi. Trying to change the title of a current gnome-terminal (similar to the "set title" that you can do manually") The system is running Fedora 9. The HowTo Xterm-Title discusses how to set the prompt, for an xterm. Tried to implement the escape sequences with no luck. (might be something weird..) Tried to use the gconftool to dump/change/load the changed conf attributes, and again, no luck. Also, set the PROMPT_COMMAND just in case the prompt command was somehow changing the title back (which is highly doubtful) Searching the 'net indicates that a few people have tried to solve this with no luck... I'd also like to figure out how to create a new gnome-terminal with a unique specified title... once this is solved, i'l gladly create a quick writeup/post onn how to accomplish this for others... thanks

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• What language available on commodity web hosts would suit a C# developer? [closed]

  - by billpg

  Recognising its ubiquity on commodity web hosting services, I tried developing in PHP a few years ago. I really didn't like it, later deciding that life was too short for PHP. (In brief, having to put $ on variable names; mis-spelt variable names become new variables; converting non-numeric strings to integers without complaint; the need for an "and this time I mean it" comparison operator.) In my ideal world, commodity web hosts would all support C#/ASP.NET, my preferred web-development language and framework, but this is not my ideal world. Even Mono has barely made a dent on Linux based hosts. However, last time I moaned about PHP's ubiquity, someone followed up that this was no longer the case, and that many other languages are now commonly usable on web hosts too. What programming language; a. Would suit a developer who prefers C#. b. Is available to run on many web hosts.

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• Virtualized Development Server for simulating 3-Tier Environment

  - by chris.cyvas

  Hello, I am thinking about buying a new server based development box for development (redundantly redundant, I know ;)). Ideally, I want to run something like ESXi or Xen Hypervisor at the lowest level. Then I want to add (at least) 5 Linux VM's for the following uses: 2 Web Servers 2 Application Servers 1 Database Server I want to load balance the 2 web servers and the 2 application servers and (somewhat obviously) they need to be all networked together to simulate a production environment. Also, it used to be the case that the recommendation was to put each VM on it's own hard drive, but I'm not sure that holds water anymore. Any advice? Does anyone have any advice on how to pull this off? Gotchya's, LookOuts!, etc? Thanks!

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• Why isn't Adobe software multilingual?

  - by Takowaki

  I work in a design studio with several non-native English speakers (in this case, into Japanese and Chinese). I have installed the latest Creative Suite (CS5) on our mac stations and was once again disappointed that unlike so many modern software packages there is still no option to change the language of the software. Most of the team has been good enough to work on their English, but it would be much more helpful for them to work in their native language. Why does Adobe continue to require separate licenses based on language? Are they operating under the assumption that only a single language is ever spoken in any given country? Are there any other third party options or does Adobe at least have some sort of statement regarding this policy?

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• Database Consolidation Slides

  - by B R Clouse

  In case you missed us in the Demogrounds at Oracle OpenWorld-- or if you were there and would like to take another look -- here are the slides we were presenting last week:  Database Consolidation for Private Database Clouds. I'm thinking to add a voice-over ... once my voice recovers from four days of non-stop discussions, meetings, speaking sessions etc.  A few of the questions we answered frequently included: Q: Is it possible to deploy an Oracle Database Cloud today with Oracle's current technologies and products? A: Absolutely!  Oracle has been developing technologies for several years that support the key features of a cloud environment.  Oracle Database 11g is an ideal platform for database clouds. Q: Are Oracle Engineered Systems required for Oracle Database Clouds? A: Oracle Database Clouds run best on our Engineered Systems, but can also be deployed on any platform that supports the database, as many customers are doing today. If you have questions, feel free to post them here and we'll start a dialog.

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