usr/src/usr.bin/nice/nice.c

#ifndef lint
static char *sccsid = "@(#)nice.c       4.2 (Berkeley) %G%";
#endif

#include <stdio.h>

#include <sys/time.h>
#include <sys/resource.h>

main(argc, argv)
        int argc;
        char *argv[];
{
        int nicarg = 10;

        if (argc > 1 && argv[1][0] == '-') {
                nicarg = atoi(&argv[1][1]);
                argc--, argv++;
        }
        if (argc < 2) {
                fputs("usage: nice [ -n ] command\n", stderr);
                exit(1);
        }
        if (setpriority(PRIO_PROCESS, 0, nicarg) < 0) {
                perror("setpriority");
                exit(1);
        }
        execvp(argv[1], &argv[1]);
        perror(argv[1]);
        exit(1);
}