1 static char *sccsid = "@(#)kill.c 4.1 (Berkeley) 10/01/80"; 2 /* 3 * kill - send signal to process 4 */ 5 6 #include <signal.h> 7 8 main(argc, argv) 9 char **argv; 10 { 11 register signo, pid, res; 12 int errlev; 13 extern char *sys_errlist[]; 14 extern errno; 15 16 errlev = 0; 17 if (argc <= 1) { 18 usage: 19 printf("usage: kill [ -signo ] pid ...\n"); 20 exit(2); 21 } 22 if (*argv[1] == '-') { 23 signo = atoi(argv[1]+1); 24 argc--; 25 argv++; 26 } else 27 signo = SIGTERM; 28 argv++; 29 while (argc > 1) { 30 if (**argv<'0' || **argv>'9') 31 goto usage; 32 res = kill(pid = atoi(*argv), signo); 33 if (res<0) { 34 printf("%u: %s\n", pid, sys_errlist[errno]); 35 errlev = 1; 36 } 37 argc--; 38 argv++; 39 } 40 return(errlev); 41 } 42