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/*
 * Call the system to execute a command line
 * which is passed as an argument.
 */

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

system(line)
char *line;
{
	int status, pid;
	register wpid;
	register int (*intfun)(), (*quitfun)();

	if ((pid = fork()) < 0)
		return (-1);
	if (pid == 0) {		/* Child */
		execl("/bin/sh", "sh", "-c", line, NULL);
		exit(0177);
	}
	intfun = signal(SIGINT, SIG_IGN);
	quitfun = signal(SIGQUIT, SIG_IGN);
	while ((wpid = wait(&status))!=pid && wpid>=0)
		;
	if (wpid < 0)
		status = wpid;
	signal(SIGINT, intfun);
	signal(SIGQUIT, quitfun);
	return (status);
}

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