Check if process is running C

Galway K9

Hi Guys,

From a C program how could I check if a specified process is running....to break it down, get pid from process name and check if pid is valid.....


thanks

xonet

Have a look at the source code for the pgrep utility, i.e. pgrep.c, and it will show you how to do it. Go to http://www.koders.com and search for pgrep.c.

Tillotson

I don't know the proper way, this should work though.

#include <stdlib.h>
#include <stdio.h>

int main(int argc, char *argv[]) {
        FILE *fd = popen("pgrep rpn", "r");
        char pid[10];
        while (fgets(pid, 10, fd)) {
                printf("PID: %s", pid);
        }
        return 0;
}