21. fork() and execl() combination

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21. fork() and execl() combination

Write a C program using `fork()` to create a child process that executes the `whoami` command using `execl()`. Print the output of the child process in the parent process.

gaurav133232

#include<stdlib.h>
main()
{

        printf("Before execl() call\n");
        pid_t pid = fork();
        printf("pid before execl:%d",pid);
        if(pid == 0)
        {
                int ret = execl("/bin/whoami","whoami",(char*)0);
                if(ret<0)
                        perror("execl failed");
        }
        else if(pid<0)
                perror("fork()");

return 0;

}

21. fork() and execl() combination

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