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I'm trying to study about vfork. when i used vfork, it shows the output as follows.
#include <sys/types.h>
#include <stdio.h>
#include <sys/wait.h>
void main()
{
int pid;
int...

hello all,
when we are creating a process by using fork, if the child process terminates before parent, the child process exists as zombie.. My doubt is when that child process terminates, how come...

i'm using ubuntu10.04..

How can we identify which is system calls and which is normal function? Is there any way to find out?

i'v tried just pressing enter.. but it didn't work..i'v used to set password for root. By using this command any sudoer can change the password of root.. i don't want to give this permission to...

thank you.. someone asked me this doubt.. i'm trying to find an answer how it really works..

thank you all..can we change the permissions of a file by using system calls?

thanx for your reply...I'v tried su -. But it shows authentication failure when I enter the current password of the user. Can you help me to solve this problem?

hello all,
if we haven't set a password to root user, how can we login as root user in konsole by using su? is it necessary to set password for root to login as root user?how can we set password...

hello all,
i'm a beginner in linux programming. I need to know what is the difference between system calls and normal functions like fopen, fread etc in C?Also how to set permissions by using open...

hello all..
i'm a beginner in shell scripting. I need to know what is really happening when we are creating a variable in shell scripting? how memory is allocated for that variable?