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  • read from file after calling lseek64 - Linux

    - by rursw1
    Hi, I'm trying to read a large file ( 2.0 GB). The seeking is done by lseek64, then I tried to read using read(fileHandle, buffer, bufferLength)\ pread64(fileHandle, buffer, bufferLength, offset) - but both return with -1. What could it be? Thanks in advance!

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  • Linux apache developing configuration

    - by Jeffrey Vandenborne
    Recenly reinstalled my system, and came to a point where I need apache and php. I've been searching a long time, but I can't figure out how to configure apache the best way for a developer computer. The plan is simple, I want to install apache 2 + mysql server so I can develop some php website. I don't want to install lamp though, just the apache2, php5 and mysql. The problem that I've been looking an answer for is the permissions on the /var/www/ folder. I've tried making it my folder using the chown command, followed by a chmod -R 755 /var/www. Most things work then, but fwrite for example won't work, because I need to give write permissions to everyone, unless I change my global umask to 000 I'm not sure what I can do. In short: I want to install apache2, php5, mysql-server without using lamp, but configured in a way so I can open up netbeans, start a project with root in /var/www/, and run every single function without permission faults. Does anyone have experiences or workarounds to this? Extra: OS: Ubuntu 10.04 ARCH: x86_64

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  • How to archive old revisions from Apache SVN on linux server

    - by user1260729
    I have a site through which user can write their own Screenplays. This screenplays are saved in the form of revisions. Apache SVN has been installed. I want to save only the last 5 revisions for every user's document. But the problem is on the backend the all the revisions are stored in one folder called "Docsrepo" and its classified as 1000 revisions in 1 folder. and like this it has 234 folders. Meaning 234*1000 revisions. Now I want to archive all of this revision to keep only the last 5 revisions of each document. How do i do that?

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  • Linux - Bash Redirect a String to a file

    - by user3502786
    I wrote a simple script that is reading the file content and incrementing a a number inside this file, then i'm holding the change using awk, when i'm trying ro redirect the new String using '' the whole string is redirected in one line and not like the original was which is 4 lines. #!/bin/bash -x # This script is for Incrementing build numbers path=/home/RND/abrodov file=tst.txt tst=`cat $path/$file` printf "this is the content of the file before incrementing: \n $tst" newexpr=`awk '/^Build Number/{$4=$4+1;}1' /home/RND/abrodov/tst.txt` printf "\n the new content \n $newexpr" echo $newexpr > $path/$file This is the original file before running the script: Major Release Number = 4 Minor Release Number = 1 Service Pack Release Number = 2 Build Number = 22 This is the content after i used the script: Major Release Number = 4 Minor Release Number = 1 Service Pack Release Number = 2 Build Number = 23 I'm trying to figure out how can i redirect the text in the original format which is 4 lines.

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  • GUI/TUI linux library

    - by Penz
    Is there any UI library that can be to build both a text user interface (ncurses) and graphical user interface (GTK? QT?) from the same source? I know that debconf can be used with various frontends, I would like to build something similar but programmable.

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  • script to sum all numbers in a file (linux)

    - by Mark Roberts
    I have a file which contains several thousand numbers, each on it's own line: 34 42 11 6 2 99 ... I'm looking to write a script which will print the sum of all numbers in the file. I've got a solution, but it's not very efficient. (It takes several minutes to run.) I'm looking for a more efficient solution. Any suggestions?

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  • linux (centos) privilege to copy file

    - by vick
    I need some help with priviligies in centos I have a file in home/admin/public_html/generate.php that I want to do some file copy with using php copy function When I set the file to chown admin:admin generate.php I can access the file but I cannot execute the php copy command because I don't have the proper rights. When I set the file to root:root generate.php I cant access the file beacuse its under admin user folder home/admin/public_html/generate.php how do I solve please, thankful for any help. Bottom line is that I want my generate.php which is owned by admin:admin to be able to copy files from sources outside its home dir and to other home dirs I am using CENTOS

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  • Batch convert Malformed PDFs to TIF on Linux

    - by Mike Driscoll
    I need to convert a multipage PDF to TIF, but it appears to be a malformed PDF provided by our client. I tried using ImageMagick and GhostScript, but they do not convert the file correctly. The result is only about 85-90% correct. The only thing I've found that appears to do the job is GIMP, but I can't find an example to use it via its Batch Processing methods for PDFs. Here are the warnings I get from ImageMagick and GhostScript: **** Warning: Tf refers to an unknown resource name: FORMS$.f Assuming it's a font name. **** Warning: Tf refers to an unknown resource name: P06BOB.f Assuming it's a font name. **** Warning: Tf refers to an unknown resource name: UN308E.f Assuming it's a font name. **** Warning: Tf refers to an unknown resource name: P06BOB.f Assuming it's a font name. **** Warning: Tf refers to an unknown resource name: UN308E.f Assuming it's a font name. **** Warning: Tf refers to an unknown resource name: P06BOB.f Assuming it's a font name. **** Warning: Tf refers to an unknown resource name: UN308E.f Assuming it's a font name. **** Warning: Tf refers to an unknown resource name: UN307A.f Assuming it's a font name. **** Warning: Tf refers to an unknown resource name: UN104A.f Assuming it's a font name. **** Warning: Tf refers to an unknown resource name: UN308E.f Assuming it's a font name. **** Warning: Tf refers to an unknown resource name: UN208E.f Assuming it's a font name. **** Warning: Tf refers to an unknown resource name: UN308E.f Assuming it's a font name. **** Warning: Tf refers to an unknown resource name: UN208E.f Assuming it's a font name. **** Warning: Tf refers to an unknown resource name: HE14BP.f Assuming it's a font name. **** Warning: Tf refers to an unknown resource name: UN208E.f Assuming it's a font name. **** Warning: Tf refers to an unknown resource name: UN106E.f Assuming it's a font name. **** Warning: Tf refers to an unknown resource name: UN208E.f Assuming it's a font name. **** Warning: Tf refers to an unknown resource name: UN106E.f Assuming it's a font name. **** Warning: Tf refers to an unknown resource name: UN208E.f Assuming it's a font name. **** Warning: Tf refers to an unknown resource name: HE08BP.f Assuming it's a font name. **** Warning: Tf refers to an unknown resource name: HE11BP.f Assuming it's a font name. **** Warning: Tf refers to an unknown resource name: AR10NP.f Assuming it's a font name. **** Warning: Tf refers to an unknown resource name: UN308E.f Assuming it's a font name. **** Warning: Tf refers to an unknown resource name: JIMP2.l Assuming it's a font name. **** Warning: Tf refers to an unknown resource name: HS11C.l Assuming it's a font name. **** Warning: Tf refers to an unknown resource name: FORMS$.f Assuming it's a font name. **** Warning: Tf refers to an unknown resource name: UN104A.f Assuming it's a font name. **** Warning: Tf refers to an unknown resource name: UN208E.f Assuming it's a font name. **** Warning: Tf refers to an unknown resource name: UN307E.f Assuming it's a font name. **** This file had errors that were repaired or ignored. **** Please notify the author of the software that produced this **** file that it does not conform to Adobe's published PDF **** specification. I'm open to other suggestions too. Thanks!

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  • Embedded systems linux

    - by bhaskaragr29
    I want to make final year project so i want a two way interface device one connect to server and other connect to ouput display device..like television. whats are the rquirements i need....and how do i this.

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  • Program visible to Linux as normal directory

    - by Xam
    I'm trying to write program to work as programmable directory, in other words: User, or other systems open that directory and read/write files or dirs. I try to create program to cache most used files in memory (less I/O to HDD), but right now I don't know how to achive that. There are probably some docs about this but I can't find them. I know that there is FUSE, NFS and others, but reading their source is quite difficult. If any one has info about implementation in C lang I'll be very grateful. Sorry for my English..

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  • Touchpad access in Linux

    - by Mike Hordecki
    Hi! The problem is: How to access x,y,z coordinates of my touchpad? Now that SHMConfig is disabled by default, I've found out that, in order to do it, I need to access a file from /dev/input/. Those files are, sadly, readable by root only. Is there any way to access the touchpad while in user-mode?

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  • new items on GRUB screen in ubuntu/linux

    - by artsince
    I regularly update my ubuntu (10.04), and new minor versions keep accumulating on the GRUB screen. Right now I have 5 different versions listed on the GRUB, even though I always select the latest version to work with. Am I supposed to do anything to get rid of the old version references? Do these old versions affect disk space/performance?

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  • linux cpu usage

    - by davidbobo
    I am working on unix. I want to knwo the current cpu usage of a process. I understood that ps give the average of cpu used till the process is up - it is not the current usage. Is there a way to print only the cpu from the top command without 10 more parameters and headers? I know how to do it with awk - this is not the way i want to do it. top -p 20705 -bc -n 1 | tail -n 2 | awk '{ print $9}' | head -n 1 If there is another simple way to do it, not reading /proc/stat... If there is a simple way doing it from c++, it is also ok.

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  • JVM hs_err.log not being generated on Linux

    - by halfwarp
    Hello, I'm currently having some issues with a Java application I'm developing. Namely the JVM is crashing with a segfault. I'm trying to locate the hs_err.log file which should contain some helpful info about the issue. However, I can't find this file. I've used find, locate, etc, and nothing. Any ideas on why the log file isn't being generated?

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  • Filtering Linux command output

    - by Raajkumar
    Hi, I need to get a row based on column value just like querying a database. I have a command output like this, Name ID Mem VCPUs State Time(s) Domain-0 0 15485 16 r----- 1779042.1 prime95-01 512 1 -b---- 61.9 Here I need to list only those rows where state is "r". Something like this, Domain-0 0 15485 16 r----- 1779042.1 I have tried using "grep" and "awk" but still I am not able to succeed. Please help me on this issue. Regards, Raaj

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  • Linux program - reverse highlighted text

    - by Oren
    I want to develop a program that will run on the background of my Ubuntu 12.04 so when some text is selected in some textbox of any running program and some key-combination is pressed (like ctrl-F12), the text will be cut, reversed, and pasted in the same place. I know some programs that do it on windows. It is useful in some programs and web-pages that do not support right-to-left languages like arabic and hebrew - the letters are printed from left to right so the text becomes reversed. More specifically I need it in Prezi that has this kind of bug in their embedded flash editor (I thought about writing a chrome-plugin, but I don't think such plugin can manipulate the selected text inside a flash objects). Do you know if such a program exist? Where should I start reading in order to develop a program with such capabilities (manipulate selected text in other programs)? Thanks

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  • Run Jar in Background on Linux

    - by Benny
    I have a jar that runs forever (infinite loop with socket listening thread) and need it to run in the background at all times. An example would be: "java -jar test.jar" How do I do this? Thanks in advance!

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  • Restricting access to a subdirectory on linux

    - by David
    I'm looking for a way to make a directory accessible only to its parent directories. That is, suppose you have two directories, A and B, at the same level in the file hierarchy. Now suppose that you have a directory A' which is a subdirectory of A. I'd like to enforce that A is able to access the contents of A' but B is not.

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  • Where is my software installed in Linux?

    - by David
    I use whereis matlab and find: /usr/local/bin/matlab , which is a very long bash file. How can I find where matlab is installed, I mean, its installed folder. EDIT: I used the following method: open matlab and use edit svds.m to open the svds.m file and the editor shows the folder:)

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  • Linux Sendmail Same username multiple domains

    - by Dev Jadeja
    I have configure my sendmail for multiple domains by creating username like [email protected] [email protected] [email protected] in passwd file Now I added entry in file /etc/mail/virtusetable like [email protected] sales\@domain1.com [email protected] sales\@domain2.com [email protected] sales\@domain3.com So when configuring the email client you provide your username as [email protected],[email protected] etc. I tested with webmail and outlook it works. Is this the best way to do it ?.Do i need to put the entry in any there file like genericstable or alias table?

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