BSD 4_3_Tahoe release

[unix-history] / usr / src / bin / nice.c

/*
* Copyright (c) 1980 Regents of the University of California.
* All rights reserved.  The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1980 Regents of the University of California.\n\
All rights reserved.\n";
#endif not lint

#ifndef lint
static char sccsid[] = "@(#)nice.c      5.2 (Berkeley) 1/12/86";
#endif not lint

#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, 
           getpriority(PRIO_PROCESS, 0) + nicarg) < 0) {
               perror("setpriority");
               exit(1);
       }
       execvp(argv[1], &argv[1]);
       perror(argv[1]);
       exit(1);
}