/*
zap
interactive process killer

from kernighan and pike, p191
*/


#include <stdio.h>
#include <signal.h>

char *progname;		/*program name for error message*/
char *ps = "/bin/ps -auxc";	/*system dependent*/

main(argc, argv)
int argc;
char *argv[];
{
	FILE *fin, *popen();
	char buf[BUFSIZ];
	int pid;
	
	progname = argv[0];
	if ((fin = popen(ps, "r")) == NULL)
	{
		fprintf(stderr, "%s: can't run %s\n", progname, ps);
		exit(1);
	}
	fgets(buf, sizeof buf, fin);	/*get header line*/
	fprintf(stderr, "%s", buf);
	while (fgets(buf, sizeof buf, fin) != NULL)
		if (argc == 1 || strindex(buf, argv[1]) >= 0)
		{
			buf[strlen(buf) - 1] = '\0'; /*suppress \n*/
			fprintf(stderr, "%s? ", buf);
			if (ttyin() == 'y')
			{
				sscanf(buf, "%*s%d", &pid);
				kill(pid, SIGKILL);
			}
		}
	exit(0);
}