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• Rearrange content of a file

  - by VikJES

  I'd like to rearrange the content of a file on a per line basis (see below), ideally without using Perl or Python (I'm not allowed to... Don't ask.) The input file contains unordered header lines and lines with backup operation results. The output files should contain the lines ordered as shown below. Original file: Completed Backups Backups with Warnings Failed Backups Server A backup was completed with warnings Server B backup was successful Server C backup failed Server D backup was completed with warnings End result: Completed Backups Server B backup was successful Backups with Warnings Server A backup was completed with warnings Server D backup was completed with warnings Failed Backups Server C backup failed

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• Is there a way to create a copy-on-write copy of a directory?

  - by BCS

  I'm thinking of a situation where I would have something that creates a copy of a directory, tweaks a few files, and then does some processing on the result. This wold be done fairly often, maybe a few dozen times a day. (The exact use case is testing patch submissions; dupe the code, patch it, build/test/report/etc.) What I'm looking for could be done by creating a new directory structure and populating it with hard links from the origonal. However this only works if all the tools you use delete and recreate files rather than edit them in place. Is there a way to have the file system do copy-on-write for a file? Note: I'm aware that many FSs use COW at a block level (all updates are done via writes to new blocks) but this is not what I want.

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• Couchdb failing test suite on Linux

  - by user52674

  Hi I've been trying to install CouchDB on my webfusion virtual server. I followed the latest instructions from the webfusion forum (see: http://forum.webfaction.com/viewtopic.php?id=2355 ) and it runs (just) Futon is very sluggish and I get 502 errors. Anyway when I run the test suite it fails on multiple tests. Webfaction support have been great but don't have erlang experience to interpret the error logs. Can anyone help me know what might be wrong? Test suite result: basics, all_docs, attachments, attachments_multipart, attachment_names, compact, config, conflicts, delayed_commits, design_docs, design_options all the errors are: Exception raised: {"error":"unknown","reason":"\u000d\u000a502 Bad Gateway\u000d\u000a\u000d\u000a<\h1502 Bad Gateway\u000d\u000a nginx\u000d\u000a\u000d\u000a\u000d\u000a"} except for 'compact; which also has: Assertion failed: xhr.responseText == "This is a base64 encoded text" Assertion failed: xhr.getResponseHeader("Content-Type") == "text/plain" I'm stumped. Anybody know what these indicate? AL

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• Hyper-v dynamic memory client machines always use maximum memory

  - by Eric P

  When I create a virtual machine in Hyper-V and set it up to use dynamic memory, the virtual machine will always use the maximum memory within the virtualized OS. Hyper-V will show the assigned memory at 514mb, but when I log into the server and pull up task manager, it will show 90% memory used. When I bump the maximum memory up to 4gb, I get the same result: 90% memory usage. Nothing is even running on the virtual machine other than a clean instal of Windows Server 2008 R2. I have also tried it with Windows 7 with the same results. Is this the expected behavior or is something setup wrong

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• Hard-drive will randomly fail to load GRUB. Booting a live USB/CD fixes the issue temporarily

  - by Usagi

  I am running 12.04 64-bit and am dual booting with Win7, for full disclosure, although I suspect that has nothing to do with my problem. Occasionally the boot-loader(GRUB) will fail to load and I will be presented with a black screen with a single blinking line. There is no apparent pattern although I suspect there is one and it is related to a program I am running. This has happened to me eight out of ten power cycles now and I can fix it consistently, however, I have no idea why it happens. My current fix is to boot a live CD (I've tried both KNOPPIX and Ubuntu with the same result) and that's it. Somehow booting with the live CD is enough to "wake-up" my hard drive. I then reboot and GRUB magically appears again. So what is going on? Is it possible that a program is corrupting my MBR and the live CD is restoring it? How can I narrow down the possibilities? Thanks. Additional: This is still a problem. I'm convinced now that it is not hardware related as I've spent the last month and several boot cycles on Windows without a hiccup. Recently when I started using Ubuntu again the problem started again. I am more interested in figuring out what is going on rather than actually fixing the problem. Are there any tools, logs, etc. I can use to unravel this mystery?

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• Do input template languages exist?

  - by marczellm

  When I have to create some textual representation of data, I can use a template language, so that my code does not have to worry about the structure of the output file - I can sometimes even write code that's independent of whether the output is XML, LaTeX or any other plain text. A simple example: Template (in separate file): <someXmlTag> $variableName </someXmlTag> Code: Template(temstring).substitute(variableName="value") Result (written to output file): <someXmlTag> value </someXmlTag> I want to do the same, but in the opposite direction. I have XML or plain text or whatever files to input. I want to describe the input structure in a separate file that looks like the input but has these variable declarations in it, and I want to handle it with code that's independent of the structure. Is there a library for this concept? (We usually handle XML input by using an XML parser library to describe the input structure in program code, handle plaintext input by writing regexes in code, and don't handle LaTeX input because LaTeX can't really be parsed.)

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• What can I do in order to inform users of potential errors in my software in order to minimize liability?

  - by phobitor

  I'm an independent software developer that's spent the last few months creating software for viewing and searching map data. The software has some navigation functionality as well (mapping, directions,etc). The eventual goal is to sell it in mobile app markets. I use OpenStreetMap as my data source. I'm concerned about liability for erroneous map data / routing instructions, etc that might result when someone uses the application. There are a lot of stories on the internet where someone gets into an accident or gets stuck or gets lost because of their GPS unit/Google Maps/mapping app... I myself have come across incorrect map data as well in a GPS unit I have in my car. While I try to make my own software as bug free as possible, no software is truly bug free. And moving beyond what I can control, OpenStreetMap data (and street map data in general) is prone to errors as well. What steps can I take to clearly inform the user that results from the software aren't always perfect, and to minimize my liability?

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• match patterns update output file uncomment when desired

  - by user2692634

  Need suggestion for following. Have two files myfile and responsefile. First file myfile.txt user=myname user_1=yourname group=mygroup group_1=yourgroup second file responsefile.txt #Please fill details user= #user_1= #user_2= #Please fill details group= #group_1= #group_2= Based on myfile.txt data update responsefile.txt as below and the file responsefile.txt is lenghty of about 604L, 16481C. Result output responsefile.txt #Please fill details user=myname user_1=yourname #user_2= #Please fill details group=mygroup group_1=yourgroup #group_2= If you observe myfile above, I want to match user= in responsefile, then update as user=myname, same applies for group=. Then match user_1= and group_1= which is hashed or commented in responsefile, update as user_1=yourname and group_1=yourgroup. Should not remove hash or uncomment for others in file. I tried this awk -F= 'NR==FNR{a[$1]=$0;next}$1 in a{$0=a[$1]}1' myfile.txt responsefile.txt Please suggest thanks in advance.

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• Copy/Pasting data from SQL Server to Excel splits up text into multiple columns?

  - by Paul

  I've got a problem pasting data from the result grid of SQL Server 2005 to an excel 2007 spreadsheet. I have a query in SQL Server that returns 2 columns (a number column and a text column) On one computer here i can happily copy (right-click copy) and then just right-click and paste into an excel spreadsheet. no problem. On another computer here when i try and paste into excel it splits the text column up and pastes the text into multiple columns based on spaces between words. For example if one of the rows has... Paste me please ...in it then when pasting into excel it splits the text and pastes each work into a seperate column within excel. We've tried comparing options in both SQL Server & excel with the computer it works fine on but can see no differences. Any ideas welcome Thanks

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• set a global environment variable in linux that sticks when going root

  - by Scott

  When I SSH into a linux box, I want to have the /etc/profile file save the results of the whoami command to a global environment variable. if I were to go root with the command sudo su -, I do not want that command to run again when gonig root, I want it to stick with the result of whoami as my regular username from before I went root, and I need to access that variable as the root user even though it will run the /etc/profile file again when I go root. What can I do to only run that command once in the /etc/profile command?

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• Recently used contacts getting corrupted Outlook 2010

  - by advis12

  We are using Microsoft's Identity Integration Feature Pack to sync contacts between two separate domains at two separate branches of our company. Recently we have run into an issue with a few of the contacts being pulled/synced from this remote location. When people in our organizaion are sending emails to certain contacts that are being synced from the remote location, the message delivery fails. After looking into the issue we are seeing that this failure is the result of the email being sent to some obscure email address rather than the correct email address. For example, the email address is getting changed to IMCEAEX_O=NT5_ou=44C5AE1BBEE0ED499F607407769311BB_cn=2F31FA0CA187314FA8D6A99BEFC52C36@domain.com rather than [email protected] Clearing the recently used contact list seems to solve the issue, but it does not solve the underlying problem. Because this issue is starting to happen to several different people I would like to solve the underlying cause. Does anyone have any input on how to start troubleshooting this issue? Also, we are using Exchange 2010. Thank you for taking the time to look at this.

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• How to switch users without entering password, part II

  - by torbengb

  I've got Ubuntu 9.10 with a user account for my wife, and one for myself. "Wake-from-screensaver" should result in "choose user" without having to enter any password. I know how to do that in Windows, but I'm not good with Linux (yet). Part of this was answered in this question which helped me get past the login screen without passwords (after booting, and after choosing "switch user"), but once the screensaver kicks in and I wake it up again, the system does not present the "choose user" screen. Instead, it either turns off the screensaver and presents the desktop of the most recent user, or (if the screensaver is set to lock the screen) prompt for the user's password (which can be handily surpassed by clicking the "switch user" button and choosing the same user again). So, the login ("choose user") screen has been dealt with. How do I make the (any) screensaver return to the login screen at wake, rather than to the current user's desktop? Windows can do this, I'm sure Linux can too - but how?

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• Multi-site Drupal install with sites on different ports using Apache ip-based hosting?

  - by MattB

  In the past we've used name-based virtual hosting in Apache. We recently converted websites to SSL and had to go the ip-based route. As a result, we currently have an instance that is set up as follows: www.domain.com using port 80 dev.domain.com using port 8080 Both use the same IP. Is this scenario possible using Drupal multi-site functionality? While we find that dev.domain.com works and reads the correct "dev" database (using the dev settings), it reads theme files from the "www" site instead which is not what we want. Is the culprit the dev's htaccess file? Apache is listening on 8080 and does use the proper DB settings, but just not the correct theme files. One other note: browsing dev.domain.com:8080 gives an error: "The page isn't redirecting properly". Should we just purchase a new IP address for the dev website, or would this still not help? Any advice would be appreciated. Thanks.

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• Equalizer for Toshiba Satellite Pro Laptop (Windows 7) (has Realtek sound)

  - by Need Help

  Hi, I've been trying to find a way to have a real equalizer for my Toshiba Satellite Pro Laptop. I don't know much about computers but the guys in the store seem to know less than I do! From what I've been able to glean through friends, Windows 7 no longer supports a real equalizer function with Realtek, and the result is a fake "equalizer" that does nothing. I have hearing issues so not being able properly adjust the higher frequencies is causing me physical pain and ringing in my ears. I've tried to decipher the threads I find online but am quite confused by them. Basically I need an equalizer that will work with Windows 7 (with everything, internet, skype, music, etc). The current drivers offered by Realtek do nothing except make the sound inaudible. The one that may possibly work and provide an actual equalizer is a few versions back and can't be found anywhere. Thanks! And sorry if this is a duplicate question but I am confused a bit by the threads online.

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• How to manipulate this string of text to make it readable?

  - by Kenny

  I have this string in an excel file: 4603,2504603#;4616,2504616#;4617,2504617#;4519,2504519#;4620,2504620 (It's actually a lot longer than that, but the pattern is the same). I need to be able to some how sort this into something that can be read easier. I want the end result to look like this: 4603,2504603 4616,2504616 4617,2504617 I guess I need a program or command that can replace #; with a line break. I need something that will work in Windows 7. I remember doing something similar to this in a Linux class using shell scripting but I can't remember how it was done. Note: This is NOT homework. It is something my boss has asked me to do at work.

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• No boot option after installing Ubuntu 12.04 LTS on Acer Aspire 4736z with Live CD

  - by utamaku

  I am facing a problem. After installing Ubuntu 12.04 LTS using Live CD, at the reboot there is no boot option to choose the OS. I directly get logged into my Windows 7. Before that i was having an issue with the 'nomodeset' if not mistaken .After ticking [x] on the nomodeset, i can install my Ubuntu, but got stucked again at choosing the partition option. So i did 2 partitions for Ubuntu, 1 partition as ext3 for / and the other 1 for swap. Which enabled to proceed until the finished installation dialogue, and after that system wants to reboot .It takes some time and gets stuck at the screen doing nothing, doesn't reboot at all. I did forced shutdown then rebooted again which directly logs me in windows 7 without boot option. In win7 the partitions for Ubuntu is gone. I tried the boot-repair thing and it doesn't help .It just shows up the _ Blank Cursor (terminal thing i guess). I typed boot repair but still the same result. I am using Acer Aspire 4736z. Please somebody help me with this issue.

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• Is there a way to undo deletion of registry keys while the machine is still running?

  - by Oliver Giesen

  [ also posted from a programmer's POV at http://stackoverflow.com/questions/3299230 ] I messed up big time and deleted a large portion of my registry during a programming experiment: As a result most of the contents of HKEY_CURRENT_USER\Software\ are gone. I haven't logged off or shutdown since this happened. The applications that were already running seem to be coping fine so far but I suspect that after the next reboot there won't be much happiness left... Also, System Restore tells me there are no restore points even though I'm pretty sure there should have been. Could this be another symptom of the purged registry? I wouldn't have expected this information to be stored under HKCU, though... Does anybody know of a technique or utility that can possibly restore some or all of the deleted entries? I'm on Windows 7 Enterprise 32bit. I'm not really holding my breath but you can always hope, can't you?

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• Oneric Aspire One. After latest 11.10 update to Linux 3.0.0-9 boot hangs at staement "Starting Bluetooth"

  - by hevh

  I have today updated the version of Linux on Ubuntu on my Acer Aspire One. The boot hangs on the statement "Starting Bluetooth". Help please!! EDIT1: I get the grub menu when I start the netbook and it doesn´t matter which version of linux I choose the resulkt is the same. It gets as far as the Ubuntu spash screen then drops into command line mode then hangs on the line "Starting Bluetooth". I can log in and have tried various forms of the apt-get command to fix the system but with no result. I do not need bluetooth at the moment and so could remove the application if I knew how. (have tried apt-get remove bluez). When I use the command sudo apt-get -f install I get an error message saying "There's not enough space in /var/lib/mysql/" folowed by several other error messages. I have spent some time looking for similar problems and solutions using google but so far got to nothing to help. Thanks EDIT2: I have since discovered when running Knoppix or slitaz from a usb stick that the file managers report the hard disc as having no space. However GPARTED reports it as having 3.69gb. I do recall making space on the hard drive by deleting some old files and emptying trash whilst the update was running; perhaps its related. Any suggestions for how I can recover the apparently lost space from hard disc without losing the data. I have backups of the actual data but do not wnat to lose the applcations configuration. Thanks Kev

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• Workgroup connection: You may not have permission

  - by Afiefh

  I have two Windows XP computers connected through an Ad-Hoc network, computer A creates the network and B connects to it. Both computers are on the Mshome network and have file and printer sharing enabled, and they can ping one another through the adhoc network. The result is that computer A can see computer B, but B cannot see A in the workgroup. But when A tries to access B I get a "you might not have permission to access" error telling me to contact the administrator. I tries to google the error, but most posts talk about problems connecting different versions of Windows to each other. I tried turning off the firewalls on both machines and checking if the required services are running. Nothing helped. Please excuse my ignorance on Windows networking, I haven't used Windows in around 10 years.

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• Misbehavior in regular expression in VIM

  - by poissonbreaker

  I am having a problem with a regular expression on vim. I have a pattern as follows: http:\/\/\(\w\+\.\?\)\+ [matches http://(AS MANY WORDS FOLLOWED BY DOT OR NOT ENCOUNTERS) e.g. http://wd1.wd2.com] I have a text as follows: http://wd1.wd2.com/wd3 I am trying to make this substitution on it: s/\(http:\/\/\)\(\w\+\.\?\)\+/\1wd4.wd5.com and the result is http://wd4.wd5.com /wd3 (Notice the white space inserted at the end of the replacement) How can I avoid having this inserted space? I am afraid is a bug in the regexp engine but I am not sure.

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• Why would an ext3 filsystem be rolled back on a Debian VM running in VirtualBox after loss of power to the host

  - by Sevas

  A Debian Virtual machine runs as a Guest VirtualBox VM. It's filesystem is EXT3. The host system loses power and after booting up the host system and guest VM, I find that the VM's filesystem has been rolled back to a previous state, losing changes made to the filesystem some time before losing power. The operations that were rolled back had been fully completed before the loss of power (files fully copied, file handles closed, etc.), but it's possible and even likely that other write operations were occuring on the VM at the point of the crash. So I am trying to figure out if it's the filesystem recovery process that rolls back filesystem operations after encountering corruption post power loss, or is it possibly related to VirtualBox and the way it ignores flush requests for performance gains by default (discussed here) Are there any other factors that would result in the filesystem being rolled back after losing power?

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• Only 5 simultaneously users with PPTP VPN?

  - by Plastkort

  we have a windows 2008 R2 standard server which job is to accept incoming VPN connections via PPTP. it seems to work fine, but the moment the 6th user try to connect, we get the following error: ERROR_VPN_DISCONNECT 807 The network connection between your computer and the VPN server was interrupted. This can be caused by a problem in the VPN transmission and is commonly the result of internet latency or simply that your VPN server has reached capacity. where do we find out how to increase the amount of simultaneously users?, I read somewhere that we can have over 100 connected clients at the same time, when I created this server, I did the following : Network & sharing - Network adapters - File - new incoming connections now I tried to choose and create users here, but we have a domain controller which seems to override this, so the domain users works after this I was able to connect atleast 5 clients... how and where do I increase the "capacity"?

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• How to handle the fear of future licensing issues of third-party products in software development?

  - by Ian Pugsley

  The company I work for recently purchased some third party libraries from a very well-known, established vendor. There is some fear among management that the possibility exists that our license to use the software could be revoked somehow. The example I'm hearing is of something like a patent issue; i.e. the company we purchased the libraries from could be sued and legally lose the ability to distribute and provide the libraries. The big fear is that we get some sort of notice that we have to cease usage of the libraries entirely, and have some small time period to do so. As a result of this fear, our ability to use these libraries (which the company has spent money on...) is being limited, at the cost of many hours worth of development time. Specifically, we're having to develop lots of the features that the library already incorporates. Should we be limiting ourselves in this way? Is it possible for the perpetual license granted to us by the third party to be revoked in the case of something like a patent issue, and are there any examples of something like this happening? Most importantly, if this is something to legitimately be concerned about, how do people ever go about taking advantage third-party software while preparing for the possibility of losing that capability entirely? P.S. - I understand that this will venture into legal knowledge, and that none of the answers provided can be construed as legal advice in any fashion.

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• filtering itunes library items by file location

  - by Cawas

  The Problem I've got way more than 1000 duplicated items in my iTunes Library pointing to a non-existant place (the "where" under "get info" window), along with other duplicated items and other MIAs (Missing In Action). Is there any simple way to just delete all of them and only them? By that I mean some MIAs are pointing to /Volumes while some are pointing to .../music/Music/... or just .../music/.... I want to delete all pointing to /Volumes as to later I'll recover the rest. Check the image below. Some Background I tried searching for a specific key word on the path and creating smart play list, but with no result. Being able to just sort all library by path would be a perfect solution! I believe old iTunes could do that. PowerTunes can do it (sort by path) but I can't do anything with its list. Yes, all of the /Volumes look like that.

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• How to use OpenVPN through a restrictive firewall?

  - by R.L. Stine

  I'm currently in the situation of attempting to setup OpenVPN on a personal VPS, for connection primarily through an overly restrictive firewall. All of the setups mentioned below work when used through a reasonably-firewalled connection. I have tried: OpenVPN running on the standard port OpenVPN running on port 443 (I start OpenVPN manually from the command line on the VPS and see that the server reports the connection being closed almost immediately, I assume this is a result of DPI on the firewall) STunnel running on port 443 to access OpenVPN and evade DPI. This is the most successful and allows a connection and internet access through the VPN for ~10-20 seconds, before the connection is forcibly closed. Is there anything else I can attempt?

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