#include <stdio.h>
#include <sys/types.h>
#include <stdlib.h>
pid_t foo(char *pid_to_find)
{
    char cmd[296]={0x0}; /* 40 + 256 */
    char tmp[256]={0x0};
    FILE *in=NULL;
    int retval=0;
    pid_t the_pid_I_found=0;

    snprintf(cmd,sizeof(cmd)-40,
       "ps -ef | grep  %s | awk '{print $2}'",pid_to_find);
    in=popen(cmd, "r");
    if(in==NULL)
    {
         perror("Shell execution error");
         exit(EXIT_FAILURE);
    }
    while(fgets(tmp,4096,in)!=NULL)
    {
         the_pid_I_found=atol(tmp);
         break;
    }
    retval=pclose(in);
    return the_pid_I_found;
}