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Forum: Programming / Scripting

Request help with C/C++, Perl, PHP, Python, Ruby, Bash Scripts, or other Linux programming/scripting related issues

  1. Quick measurement of free system memory from within C program

    Hi, I need to monitor the amount of free physical memory on Linux from within a large C program. The sampling will occur very frequently, so the...

    Started by sgulf, 07-21-2010
    • Replies: 0
    • Views: 729
    07-21-2010 Go to last post
  2. Cron Job

    Hi all, I am running Ubuntu server 10.04 and use rsync to do all my backups. I would like to backup multiple directories to my external hard...

    Started by dschuett, 07-20-2010
    • Replies: 3
    • Views: 605
    07-21-2010 Go to last post
  3. Problem in debugging with "GDB"?

    Hi all; I'm using ubuntu 9.04. I've started using "gdb" to debug my project line by line and have not worked with command line debugger yet....

    Started by jeremy28, 07-07-2010
    • Replies: 5
    • Views: 860
    07-21-2010 Go to last post
  4. segmentation fault in handling SIGUSR

    Hi everybody! I have a thread that at some point receives SIGUSR1. When it receives it, it just prints out "Ricevuto segnale 10, SIGUSR1, adesso...

    Started by fkpac, 07-20-2010
    • Replies: 1
    • Views: 2,377
    07-21-2010 Go to last post
  5. Named pipes into program

    I'm on an embedded platform, trying to use microcom to talk to a modem device from a script. I made a named pipe with mkfifo and I'm trying to do...

    Started by shawnjgoff, 07-14-2010
    • Replies: 4
    • Views: 1,773
    07-20-2010 Go to last post
  6. esc/p to ps

    Hi all i have a big problem i use succesfuly DOSEMU 1.4 for old accounting program on i386 centos 5 program work well, printing is ok if i...

    Started by eleservice, 07-20-2010
    • Replies: 0
    • Views: 1,732
    07-20-2010 Go to last post
  7. Bash script, will this cause a stack overflow?

    I found this script on the ubuntu forum, it does work but it seems to me that if the internet connection is good it makes recursive calls to the...

    Started by spg666, 07-20-2010
    • Replies: 4
    • Views: 1,388
    07-20-2010 Go to last post
  8. Question [SOLVED] Writing webserver - how to correctly send headers?

    I'm writing a small webserver example and faced with some strange thing - headers in my server's output are not always interpreted as 'headers'...

    Started by Schmidt, 07-19-2010
    • Replies: 2
    • Views: 641
    07-20-2010 Go to last post
  9. Basic Perl Redirect question

    I've got something pretty simple I need to do with a perl script but can't quite figure it out. I need to print something like the following: ...

    Started by cheesecake42, 07-19-2010
    • Replies: 1
    • Views: 353
    07-19-2010 Go to last post
  10. Substring Extraction

    Hi, I'm trying to use ${VAR:0:4} substring extraction described here: and it works perfectly...

    Started by romanart, 07-16-2010
    • Replies: 5
    • Views: 1,851
    07-19-2010 Go to last post
  11. Detecting malloc'd mem

    Hi guys, I was wondering if there is a way to work out if an address is malloc'd and/or how big or what range the memory 'section' is. Like,...

    Started by lemons, 07-13-2010
    2 Pages
    1 2
    • Replies: 14
    • Views: 1,607
    07-19-2010 Go to last post
  12. [SOLVED] Socket and Segmentation Fault.

    Hello everyone. I am programming an application with an ARM device with an embedded version of Linux. My application talks to a java application...

    Started by striker07, 07-16-2010
    • Replies: 2
    • Views: 3,212
    07-18-2010 Go to last post
  13. [SOLVED] Problem with Openbox pipe menus

    Hi folks, I've written a small script to generate a menu structure which list my pdf files from a specific directory. The script itself works fine,...

    Started by Nathanael, 07-17-2010
    • Replies: 0
    • Views: 904
    07-17-2010 Go to last post
  14. Issue in Listing Files in a TAR

    Hello Friends, I have started getting into unix recently and seek your help in sorting out one of my porblems related to TAR files. I have a...

    Started by balamuruganmurthy, 07-15-2010
    • Replies: 5
    • Views: 1,670
    07-17-2010 Go to last post
  15. Arrow [SOLVED] open() syscall breaks execve()'s work

    here is my working code : #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <sys/types.h> #include...

    Started by Schmidt, 07-16-2010
    • Replies: 3
    • Views: 2,166
    07-17-2010 Go to last post
  16. [SOLVED] Two programs and a file: a logical conundrum

    I am working on a program called writemusic that creates a file of structures representing musical glyphs (notes, rests, barlines, etc). Another...

    Started by hazel, 07-16-2010
    • Replies: 6
    • Views: 437
    07-17-2010 Go to last post
  17. help with using awk or grep

    Hi, Thanks for reading this, and maybe helping. I want to solve the following problem. I have the file: xxx aaa xxx xxx

    Started by adriana, 07-15-2010
    • Replies: 7
    • Views: 689
    07-17-2010 Go to last post
  18. volatile sig_atomic_t

    Hi :) I need to have a global variable volatile sig_atomic_t int Terminazione=0; but I get the error error: two or more data types in...

    Started by fkpac, 07-16-2010
    • Replies: 2
    • Views: 3,206
    07-17-2010 Go to last post
  19. cmd works in bash, not crontab??

    I want to write the date & time and a text string to a file from crontab. The following line works fine in the CL: echo $(/bin/date +"%F %T")"...

    Started by three_jeeps, 07-16-2010
    • Replies: 5
    • Views: 2,746
    07-16-2010 Go to last post
  20. Issues with MD5

    alright, this is the script im working with to install a base linux system this is only one part of the entire script, but this is where my...

    Started by LinuxMan32, 07-16-2010
    • Replies: 0
    • Views: 389
    07-16-2010 Go to last post

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