C++ man pages in Ubuntu
In Ubuntu linux I can't get any man pages for C++ keywords. Is there some kind of package I can install to fix this? ...
linux
malloc in kernel
when i try to malloc at kernel mod i get screamed by the compiler : res=(ListNode*)malloc(sizeof(ListNode)); and the compiler is screaming : /root/ex3/ex3mod.c:491: error: implicit declaration of function ‘malloc’ what should i do ? ...
Remote Desktop in Linux like Team Viewer
For Remote Desktop Sessions in Linux, I want to know if there something available equivalent for what Team Viewer does for windows? The main advantage I find of Team viewer is that it can bypass firewalls, needs no NAT configurations or port forwarding rules to be setup in the router. ...
Getting error that the database is locked when refreshing the page
I am running apache with mod mono and my asp.net app is using mono sqlite as its db. When i refresh the page twice i get the DB is locked error. The folder it is in is chmod 777. The webapp is creating sqlite.db and sqlite.db-journal but it doesnt seem to be able to delete the journal. Also it has problems when i load the page once. It d...
how to make PHP lists all Linux Users?
Hello I want to build a php based site that (automate) some commands on my Ubuntu Server first thing I did was going to the file (sudoers) and add the user www-data so I can execute php commands with root privileges! # running the web apps with root power!!! www-data ALL=(ALL) NOPASSWD: ALL then my PHP code was <?php $command...
TIPC networking protocol in Linux
Hello How should I program to use TIPC networking protocol, that comes with linux kernel (CONFIG_TIPC xconfig parameter) ? Is there any applications, which uses TIPC? ...
best approah (security) to do some admin work through web page in Linux?
Hello, I want to build a web based admin tools that allow the system admin to run pre-configured commands and scripts through a web page (simple and limited webmin), what is the best approach? I already started with Ubuntu installing LAMP and give the user www-data root's privileges !!! as I learned (please check the link) this is a re...
POSIX: allocate 64KB on 64KB boundary.
I would really like to actually only allocate 64KB of memory, not 128KB and then do the alignment manually - far too wasteful. VirtualAlloc on windows gives precisely this behavior. Supposedly there's code in SquirrelFish for doing this on just about every platform, but I haven't managed to locate it. Is there a space efficient way to al...
Context switches in control paths of a non-preemptive kernel (Linux)
The Linux kernel is non-preemptive, but I just read that there could be context-switches in different control paths. Doesn't that contradict the non-preemptive nature on the Linux kernel? ...
How to programatically set a permanent environment variable in Linux?
I am writing a little install script for some software. All it does is unpack a target tar, and then i want to permanently set some environment variables - principally the location of the unpacked libs and updating $PATH. Do I need to programmatically edit the .bashrc file, adding the appropriate entries to the end for example, or is the...
BASH- Run MPlayer if either there are no users on display :0 or if there is more than one argument
This is the script I currently have- #!/bin/bash if["$#" == "2" OR who | grep ":0" == ""] export DISPLAY=:0 xset dpms force on mplayer -fs $1.mp4 fi It doesn't work. Thanks for your help. ...
selecting ppp of multiple interfaces
Hi everyone, I am currently having a hard time on getting the mobile broadband connection running on ubuntu 10.04(lucid lynx). I am using a USB modem and used wvdial to connect to the web It went like: Sending ATZ ... OK sending some more flags OK modem initialized connecting Local IP x.x.x.x Remote IP y.y.y.y Primary DNS z.z.z.z Seco...
Python modules import error
Very strange for me: # uname -a Linux localhost.localdomain 2.6.18-194.3.1.el5 #1 SMP Thu May 13 13:09:10 EDT 2010 i686 i686 i386 GNU/Linux # pwd /root # python Python 2.6.5 (r265:79063, Apr 11 2010, 22:34:44) [GCC 4.1.2 20080704 (Red Hat 4.1.2-46)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> im...
1 domain.. 2 server and 2 applications
i have a site like twitter.com on server one and on server two i have forum, which path is like domain.com/forum on server one i wanted to implement wild card dns and put main domain on it. but on server two i wanted to keep forum separate, i cant give sub-domain forum.domain.com, because all its links are already put in search engines ...
Linux - How do i know the block map of the given file and/or the free space map of the partition.
Hello, I am on Linux and need to know either of the two things: 1) If i have a regular file on some file system on a partition under Linux is there a way to know the set of the physical blocks that this file occupies on the drive from user space? Or at least the set of the file system's clusters? 2) Is there a way to get the same info...
How to setup a webserver in common lisp?
Several months ago, I was inspired by the magnificent book ANSI Common Lisp written by Paul Graham, and the statement that Lisp could be used as a secret weapon in your web development, published by the same author on his blog. Wow, that is amazing. That is something that I have been looking for long time. The author really developed a s...
how to use aspell in cmd line
i need to use aspell or any other spell checking in cmd line program i need to check for an single word only not on a file.... ...
Ofstream writes empty file on linux
Hi, I have a program which writes its output using ofstream. Everything works perfectly fine on Windows when compiled with Visual Studio, but it only writes empty file on Linux when compiled with GCC. ofstream out(path_out_cstr, ofstream::out); if(out.bad()){ cout << "Could not write the file" << flush; } else{ cout << "writing"; ou...
Can I make valgrind ignore glibc libraries?
Is it possible to tell valgrind to ignore some set of libraries? Specifically glibc libraries.. Actual Problem: I have some code that runs fine in normal execution. No leaks etc. When I try to run it through valgrind, I get core dumps and program restarts/stops. Core usually points to glibc functions (usually fseek, mutex etc). I und...
Why doesn't bash's flock with timeout exit if it fails to acquire the lock?
I am playing with using flock, a bash command for file locks to prevent two different instances of the code from running more than once. I am using this testing code: ( ( flock -x 200 ; sleep 10 ; echo "original finished" ; ) 200>./test.lock ) & ( sleep 2 ; ( flock -x -w 2 200 ; echo "a finished" ) 200>./test.lock ) & I am running 2...