intime.pl

#!/usr/bin/perl 
#===============================================================================
#
#         FILE:  intime.pl
#
#        USAGE:  ./intime.pl  
#
#  DESCRIPTION:  
#
#      OPTIONS:  ---
# REQUIREMENTS:  ---
#         BUGS:  ---
#        NOTES:  ---
#       AUTHOR:  Beomsu Chang (bschang), bschang@cern.ch
#      COMPANY:  
#      VERSION:  1.0
#      CREATED:  02/14/2012 11:46:48
#     REVISION:  ---
#===============================================================================

use strict;
use warnings;




my $timelimit = shift @ARGV;
my ( @command ) = @ARGV;
my $command = join ' ',@command;

eval {
    local $SIG{ALRM} = sub { die "alarm\n" };       # NB \n required
    alarm $timelimit;
    print $command;
    open my $com,'-|',$command;
    while(<$com>){ print };
    alarm 0;
};
if ($@) {
    # timed out
    print "\n\n##########################################################\n";
    print STDERR "error: Timeout after $timelimit seconds requesting \n";
    print "##########################################################\n";
}