BSD 3 release

[unix-history] / usr / src / cmd / kill.c

/*
* kill - send signal to process
*/

#include <signal.h>

main(argc, argv)
char **argv;
{
       register signo, pid, res;
       int errlev;
       extern char *sys_errlist[];
       extern errno;

       errlev = 0;
       if (argc <= 1) {
       usage:
               printf("usage: kill [ -signo ] pid ...\n");
               exit(2);
       }
       if (*argv[1] == '-') {
               signo = atoi(argv[1]+1);
               argc--;
               argv++;
       } else
               signo = SIGTERM;
       argv++;
       while (argc > 1) {
               if (**argv<'0' || **argv>'9')
                       goto usage;
               res = kill(pid = atoi(*argv), signo);
               if (res<0) {
                       printf("%u: %s\n", pid, sys_errlist[errno]);
                       errlev = 1;
               }
               argc--;
               argv++;
       }
       return(errlev);
}