my $timeout = 60;
my $logfile = 'logfile.txt';
my @array = ('the_binary -option1', 'the_binary -option2', 'the_binary -option3');

for (@array) {
	print "Running command $_\n";
	eval {
		local $SIG{ALRM} = sub {
			my $mod_time = time - (stat($logfile))[9];
			if ( $mod_time > 180 ) {
				die "alarm\n";
			}
			else {
				alarm 0;
				alarm $timeout;
			}
		};
		alarm $timeout;
		system($_);
		alarm 0;
	};
}