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• Under *nix, how can I find a string within a file within a directory ?

  - by roberto

  Hi all. I'm using ubuntu linux, and I use bash from with a terminal emulator every day for many tasks. I would like to know how to find a string or a substring within a file that is within a particular directory. If I was knew the file which contained my target substring, I would just cat the file and pipe it through grep, thus: cat file | grep mysubstring But in this case, the pesky substring could be anywhere within a known directory. How do I hunt down my substring ?

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• Write permissions denied on linked tables between MS Access 2003 and 2007

  - by STEVE KING

  We are in the process of switching over to Access 2007. We have numerous data tables in Access 2003 files. In one case, the user has 2007 on his PC and opened the front end in 2007. No problems. When the the user is done, he clicks a button that executes a macro full of update queries. The macro reaches the first query and halts. We get a message saying we do not have permissions to write to this linked table (2003 format). There were no security files involved. We re-linked from 2007, same problem. LAN permssions were ok. I wound up having to import the tables to front end in order for the user to be able to do his job.

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• Update 3 for "NetBeans Platform for Beginners"

  - by Geertjan

  The latest monthly update of NetBeans Platform for Beginners was released during the last few days. Without any question at all, this book is awesome. I love how it is a 'living book' and that on a monthly basis new updates are made available. In this particular update, as before, reader comments and questions have led to changes and enhancements in the book. In addition, there's now a tighter integration between the long list of samples on GitHub and the book, since wherever a sample relates to a text in the book, the book has a handy icon, so that you know when to hop over to GitHub to get a related sample. Do you have comments or questions about the book? That's what the feedback link is for: https://leanpub.com/nbp4beginners/feedback And there's also a free sample, just in case you'd like to get a feel for the book prior to buying it: http://samples.leanpub.com/nbp4beginners-sample.pdf If you're from a company where you're all sharing a single copy of the book, it would be great if you'd go back and support this great project (and hopefully encourage future books being written) by buying additional copies, ideally one for each developer. Let's show the authors that writing books on the NetBeans Platform is a really profitable thing to do (and I'm hoping they'll write one on Maven and the NetBeans Platform, as well)!

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• How to force Windows XP to rename a file with a special character?

  - by codeLes

  I have a song that Windows can't play because there is a question mark in the name of the file. "Where Have All the Cowboys Gone?.ogg" // as an example So I try to rename it and Windows complains whether I try it in Explorer or from command prompt. Error I get when trying to copy, rename, or move is: The Filename, directory name, or volume label syntax is incorrect Is there a Windows way to force a rename in this case? Update I'll keep an eye on this question, but after 13 answers and many attempts (aside form 3rd party solutions) it seems that Windows can't do this (or at least my windows can't, no short names). So I'm accepting the answer which was my original solution anyway of using Linux. It would be nice to see Windows handle this somehow, so don't stop just because I've accepted this answer, the question still stands!

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• Cloud hosting and single hardware point of failure?

  - by PeterB

  From talking to sales I thought Rackspace Cloud was running on a SAN and compute nodes (as VMWare's offerings do), only to find out it doesn't, so when the host server goes down for maintenance all cloud servers on the server go down (in our case for 2.5 hours). I understand Amazon EC2 also has this single-server point of failure. Which cloud hosting solutions don't rely on a single server? I've yet to find a list by architecture Is there a term that distinguishes between these types of 'cloud'? Is one of these 'grid computing' and the other 'virtualisation'? Can a SAN backed solution provide the same reliability as 2 mirrored cloud servers on (say) Rackspace Cloud? I am more familiar with the VMWare architecture and would like to understand the advantages and disadvantages of each approach. I understand the standard architecture is to have multiple cloud servers and mirrored data between them; until we need multiple database servers I'm wondering if a SAN/node hosting solution would provide the lack of downtime we need without the added complexity.

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• Upon Reflection

  - by foxjazz

  During my tenure at the last company, I didn't let my career stagnate as others have and as time moved along.When at work or home, spend 10% of your time learning something new about some aspect or segway of your job so that your skills are marketable in case you lose it. From experience let me reinforce that it pays off. It pays off in your current job because of the education received and the competence increase of your skills which applied will bring recognition.In these days and times, loyalty to a company is truly at an end. However many companies do care about cultivating their employees which creates a brand of loyalty that can't be replaced. Old companies with the Corp. mentality (or because of the corp. mentality) ever decrease their budgets on organizational sections and thereby do a RIF as a matter of business.The mistakes they make during this process can be risky. But who am I, but a lowly ole programmer, to judge risk. If you are laid off, be friendly with your past manager, and based on simple questions and help, give whatever help you can over the phone even though you are under no obligation to do so.It is also quite possible that there are opportunities to make at home with a new company in the future. Just remember that when inquiring about a position, take advantage of the training that is offered, and keep yourself emotionally and educationally fit.Talk soon,foxjazz

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• Should I go with Java or Python for my next project, after using PHP for 5 years? [closed]

  - by vim

  I have a full-time PHP job and I've been working with PHP for 5 years. I'm not willing to stay within this technology stack any more. I also worked with Java for 2 year before, so for me it looks more obvious to switch back to Java. However during last 5 years I was thinking about starting my own project, and now I think I have a very good SAAS idea. I'm completely confused what technology should I use for my project. I don't want to do it in PHP, and after reading many articles about rapid prototype development it seems to me that Django is the best option. I will continue to work full time for my current employer because I need to pay my bills and will work on my project in my free time. The concern I have is should I do my project in Java or Python? To be realistic there is always a risk when you are doing your own project/start-up. If I do it in Java in the worst case scenario I believe I will be able to find a full time Java position because I already have some experience in Java + recent experience in my project. With regards to Python it looks like it is not very popular in my area and salaries are much more lower then for Java. On the other hand I have a feeling that if I chose Java it will take me a way longer to finish my project. Guys I'm completely confused and I need your advice. P.S. I have moved to London 2 years ago from another country, local guys are very welcome to share their thoughts about London's job market.

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• Prioritize file sharing performance in Windows Server 2008

  - by cmbrnt

  I've got a server running Windows Server 2008, and use it mainly for sharing files throughout the domain from a number of disks. It's running on VMware ESXi 4.0, in case that matters. My problem is that when I log in to the server to check user permissions etc, the access speed the files on the remote disks almost grinds to a halt. I havn't been able to measure the speeds, but I would guess it slows down to about 100kB/s as soon as I log in. This is on a gigabit network and the problems are equal for all users, even the ones connected to the same switch as the server. I've assigned 2 GB RAM to the server, and reserved it 1,5Ghz processor power. I don't have to do anything special on the server for this halt to occur. How can I make sure file sharing is prioritized on the server, so no matter what applications I'm using it will always make sure file sharing works properly? Could this be a VMware issue?

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• Do you think Microsoft is finally on the right track with its Windows 7?

  - by Saif Bechan

  It has been a while now since Windows 7 has been released. So far I didn't hear of many major complaints about it. I can remember the time that Windows Vista hist the shelves. There were major complaints from both experts and just regular users. I do a lot of OS installs for just regular users. These are mostly family and friends, and sometimes there are some customers. Up till now I mostly still use Windows XP SP3, because it is stable and most people are familiar with it. I did Vista for some users but they always call me back with all sorts of questions and in the end I had to downgrade them to XP. Do you think it is safe now to recommend Windows 7 as a good operating system? Offcourse their hardware has to support it, but let's say that is the case. If you install Windows 7 a lot for people, what are the complaints about if you get them?

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• Cannot delete folder - Content seems to be nested recursively

  - by RikuXan

  I cannot delete a folder located on my hard disk by any means. I don't quite know how it was created, all I know is, that it is a pretty deep structure of folders (too deep to delete it at once, since Windows restriction path name too long), but the problem in the end is, that I can't "pull out" the inner folders, because they don't seem to be folders anymore (Context menu lacks things like "Properties", "Cut", "Copy", "Delete" etc.) Here a picture of how a right click looks like on one of these "folders": As you can see, the current folder is in very deep, but that is not the problem, rather the one I left-clicked on. Has anyone any advice on how to get rid of these? I tried a chkdsk, said no errors. I also tried deleting those folder via a VMWare Ubuntu, to no success. I also tried a batch file from a volunteer at MS boards, that should automatically de-nest such folders, but I guess mine is a special case, since the tool only created more such folders.

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• NFS mount of /var/www to OS X

  - by ploughguy

  I have spent 2 hours trying to create an NFS mount from my Ubuntu 10.04 LTS server to my OS X desktop system. Objective: three way file compare between the code base on the Mac, the development system on the local Linux test system, and the hosted website. The hosted service uses cpanel so I can mount a webdisk - easy as pie - took 10 seconds. The local Ubuntu box, on the other hand - nothing but pain and frustration. Here is what I have tried: In File Browser, navigate to /var/www/site and right-click. Select share this folder. Enter sharename wwwsite and a comment. Click button "Create Share". Message says - you can only share file systems you own. There is a message on how to fix this, but the killer is that this is sharing by SMB. It will change the LFs to CR-LFs which will affect the file comparison. So forget this option. In a terminal window, run shares-admin (I have not been able to convince it to give me the "Shared Folders" option in the System Administration window - Maybe it is somewhere else in the menu, but I cannot find it) define an NFS export. Enter the path /var/www/site, select NFS enter the ip address of the iMac and save. On the mac, try to mount the file system using the usual methods - finder, command line "mount" command - not found. Nothing. Tried restarting the linux box in case there is a daemon that needs restarting - nothing. So I have run out of stuff to do. I have tried searching the documentation - it is pretty basic. The man page documentation is as opaque as ever. Please, oh please, will someone help me to get this @38&@^# thing to work! Thanks for reading this far... PG.

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• InnoDb Overhead?

  - by Rimary

  I just converted several large tables from MyISAM to InnoDB. When I view the tables in phpMyAdmin, they are showing a significant amount of overhead (One table has 6.8GB). Optimizing the tables (which isn't a supported command on InnoDB) has no affect like it does on MyISAM. Is this a result of InnoDB having the ever growing data file that never returns space even after deletes? If that's the case, I've never seen overhead like this before from other InnoDB tables. Is there a way to clean this up? Edit: Here are the things I've tried (with no success): Optimize Table Reorder table by primary key Defragment table

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• Vacant thumbnail spot persists on Chrome homepage, want to set it specific to a site

  - by 9dan

  I have a vacant thumbnail place in Google Chrome that I would like to set for a particular site. In this case, it's Facebook. When I visit a new website a new thumbnail is created for that site in the sixth spot. Wanting to place Facebook at the sixth location I deleted the new thumbnail and visited Facebook again. But the sixth place remains vacant no matter how often I visit Facebook. What can I do to set a specific thumbnail position a particular site?

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• Gentoo+urxvt+terminus: How do I change font version?

  - by gaidal

  In my Debian installation I can type extended ASCII characters such as åäö by default using the terminus font, however in Gentoo I can't get it to work so far. Nothing happens when I hit those keys, like in this thread: Missing glyphs in Terminus font, how to setup a fallback font ? But in this case I know terminus supports those characters in at least some of its versions, since it's works in Debian. So what I want is to find out how to see and choose which of the many different terminus font files is being used. I set the font in the same way on both Debian and Gentoo, using URxvt*font: xft:terminus:size=xx in .Xdefaults. Both systems use en_US.UTF-8 as default locale.

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• I cannot change the grub Default item from OS-1, but I can from OS-2 (dual-boot 10.04 on both)

  - by fred.bear

  My 10.04 system (OS-1) got into a tangle the other day, so I installed a second, dual-boot 10.04 (OS-2), so that I could trouble-shoot the hung system... In case it is relevant to my question, I'll mention that since I got OS-1 working again, it has shown a few battle wounds from its ordeal (.. actually the ordeal was mine ... trying to figure it all out ;) ... I lost some custom settings, but not all. (For the curious: the hangup was caused by rsync writing 600 GB to OS-1's 320 GB drive.. The destination drive was unmounted at the time, and rsync dutifully wrote directly to /media/usb_back; filling it to capacity... I have since, ammended my script :) Because the dual-boot MBR was prepared by OS-2, it is first on the grub list.. However, I want OS-1 to be the default OS to boot... From OS-1, I tried two methods to change the grub-menu's defaule OS. eg. Directly editing /etc/default/grub (then update-grub) Running 'Startup Manager' (then update-grub) Neither of these methods had any effect... so I started OS-2, and tried method 1... It worked! Why can I not change the grub menu from OS-1? .. or if it can be done, How?

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• init.d service died

  - by jerluc

  Adapting some code from a linux forum, I've added a service script to /etc/init.d on my ubuntu natty server to start/stop/restart node.js It literally was working the first day I made it, but then today, after viewing my website this morning, the server threw a 404, and upon further inspection, the node.js process was gone. So I went to start the service again, only this time, node.js didn't start at all, and ever since I haven't been able to get my service script working. Below is the entire script: #!/bin/sh # # Node Server Startup # case "$1" in start) echo -n "Starting node: " daemon node /usr/local/www/server.js echo touch /var/lock/subsys/node ;; stop) echo -n "Shutting down node: " killall node echo rm -f /var/lock/subsys/node rm -f /var/run/node.pid ;; status) status node ;; restart) $0 stop $0 start ;; reload) echo -n "Reloading node: " killall node -HUP echo ;; *) echo "Usage: $0 {start|stop|restart|reload|status}" exit 1 esac exit 0 Thanks for any help!

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• Import EML emails into Outlook 2010 64-bit

  - by nness

  Evening everyone. I'm helping setup a small office network, where a number of old PC's are being replaced with new ones with a 64-bit copy of Outlook 2010. The old emails were stored in Windows Live Email, and were exported as .eml files (since we were replacing the machines). All the support I can find indicates that .eml files could simply be dragged-and-dropped into a folder in Outlook 2010, and it will import them correctly. However, it seems this is not the case in the 64-bit versioin, where dropping in .eml files results in a new message being created with these files as attachments. We can re-download the most of the emails off the server if need be, but there were user folders which were not on the server which we were hoping to import. Any advice would be fantastic at this point!

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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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• How much data does windows write on boot

  - by soandos

  This question was inspired by Bob's comment to my answer here. On boot, windows writes files to the hard drive (I imagine this to be the case, as it has a way of detecting if the boot was previously interrupted by a hard power-off, and I am sure many other things). But assuming that there is a "smooth" boot, where there are no error, etc, and no logon scripts that run, and things like that, about how much (a few KB, a few MB, a few GB) data gets written to the drive? For simplicity's sake, assume that: hibernation is turned off windows 7 pagefile is turned off (does this matter right at boot, or only later?) How could one go about measuring this? Are there resources that have this information?

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• Should I indicate that the user exists or was deleted on the error page?

  - by animuson

  On an ordinary public website, the user's profile is always publicly visible to all visitors (such as Stack Overflow), where they can limit certain pieces of information via privacy settings or just removing the information. Now the user has decided to delete their account (in my case deactivate) so that their account doesn't technically "exist" anymore. The way my system is set up, when their account is deactivated, their username for any content connected to them just becomes "Anonymous User" as if it were a guest that posted. I feel like this could cause some confusion for other users. I'm also concerned about what kind of error to display when someone attempts to view their profile page. My gut tells me to just display a standard 404 page to hide the fact that they ever existed, but then you also have to consider that, since usernames must be unique, anyone can go to the register page and type in the username to see if it really exists or not. I have a similar problem with another website, which gives users the ability to hide their profiles from the public and only allow registered users to view it. Again it's with the dilemma of what kind of error message to display when an unregistered users attempts to view their profile with invalid permissions. So, would it be acceptable to display basic errors such as "user has been deactivated" or "you must be logged in to view this profile" in order to give other visitors some idea of why the page can't be displayed, or should I attempt to cover the user's privacy a little and just display a standard 404 without indicating in any way that the user might exist? Are there any other issues that I'm not realizing about either route? To go back to the beginning, should I even bother changing the user's name to "Anonymous User" when their account is deactivated? Would it be acceptable to just display a non-linked version of their username in place of the normal linked display name?

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• Windows 7: How to enable firewall disabled by global policy on a computer joined to a domain?

  - by kzen

  On a Windows 7 Enterprise 64-bit laptop joined to a corporate domain, the Windows Firewall is disabled by a global policy. Is there any way to enable the Windows Firewall in this scenario? The gpedit.msc setting Windows Firewall: Protect all network connections is inaccessible. EDIT: It appears that changing HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\gpsvc\Start value to 4 will disable the GPO and allow you to start the firewall and stop the bots from pushing cr*p to your computer... will check on Monday and if it works I'll confirm here in case someone else in my situation wonders upon this question... EDIT: It's probably better if I write a mock windows service not doing anything and name it according to what is expected to be on my box and than crete mock McCrappy executable and mock McCrappy folder structure and remove all the actual stuff... That would take a little time but would most certainly make my box completely stealthy...

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• Password History Storage and Variability Comparison

  - by z3ke

  I believe this situation would be similar to many others out there, so maybe some of you can shed some light... Supposedly, when making password changes through MS exchange every 90 days, you cannot use any simple variation of one of your old passwords, up to whatever limit the admin's set for a system. My question: If your previous passwords are only stored as hashes, how can they check for the "just changed one letter" case. Wouldn't they have to have access to the old plain-text passwords in order to make those comparisons? The only other thing I can think of is if upon original creation of a password, they also stored all other one character permutations of it, so that they can be banned later?

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• Mouse pointer size inconsistent

  - by charon00

  Since installing Ubuntu 12.04, I've been having a problem with the mouse pointer size. On the desktop, it is quite a bit larger than it should be (24), though the different cursors (editing text, hyperlink hand, etc) are correct. The size changes to the correct size when the pointer is over some application windows (GVim, Netbeans, Firefox), but then changes back once it is moved out of the window. There was a similar question here, but the Xdefaults solution did not work for me, and I didn't want to try the one requiring editing the icon image. In addition, I've tried changing the cursor theme using sudo update-alternatives --config x-cursor-theme as well as using the dconf-editor, but though I can change the theme, the size issue remains. In case it's relevant, I'm running on a dual-screen setup with monitor sizes of 2560x1600 and 1920x1080, using the NVidia video driver. Is there another way to control pointer size, or a setting that might be messing it up? EDIT: These are the values/options I have for update-alternatives and in dconf-editor. I'm now wondering if Netbeans and Firefox are making the mouse pointer smaller than it should be, but I'm not sure how big 24 should be... update-alternatives: Selection Path Priority Status ------------------------------------------------------------ 0 /usr/share/icons/DMZ-White/cursor.theme 90 auto mode 1 /etc/X11/cursors/core.theme 30 manual mode 2 /etc/X11/cursors/handhelds.theme 20 manual mode 3 /etc/X11/cursors/redglass.theme 20 manual mode 4 /etc/X11/cursors/whiteglass.theme 20 manual mode * 5 /usr/share/icons/DMZ-Black/cursor.theme 30 manual mode 6 /usr/share/icons/DMZ-White/cursor.theme 90 manual mode dconf-editor: I can't post the image since I'm a new user but the cursor-size is set to 24 and the cursor-theme is DMZ-Black.

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• Why am I seeing so many instantiable classes without state?

  - by futlib

  I'm seeing a lot of instantiable classes in the C++ and Java world that don't have any state. I really can't figure out why people do that, they could just use a namespace with free functions in C++, or a class with a private constructor and only static methods in Java. The only benefit I can think of is that you don't have to change most of your code if you later decide that you want a different implementation in certain situations. But isn't that a case of premature design? It could be turned into a class later, when/if it becomes appropriate. Am I getting this wrong? Is it not OOP if I don't put everything into objects (i.e. instantiated classes)? Then why are there so many utility namespaces and classes in the standard libraries of C++ and Java? Update: I've certainly seen a lot examples of this in my previous jobs, but I'm struggling to find open source examples, so maybe it's not that common after all. Still, I'm wondering why people do it, and how common it is.

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• Let a program (called by other program) run as admin without prompt

  - by DarkGhostHunter

  As you may know, Steam doesn't like no-admin accounts for installing games or whatsoever. In my case, I have a user in my computer that usually install a lot of games and every time I have to put my password to successfully play them. Blame, /bin/SteamService.exe. I came up with a solution: using RunAs to make Steam run as the admin user. But that is a potential security risk. So instead of that, I'm asking if is possible to do the following: Hot to run SteamService.exe with high trust levels (or admin privileges) automatically when Steam calls it? That way he can play and install games in Steam leaving the rest of the system alone. I don't mind if the user has to click "yes or no", but without prompt its better because some games asks every time they're executed.

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