[root@perflnx14 SCRIPTS]# crontab -l
* * * * * perl /root/nfs_share/SCRIPTS/cron_ncp.pl >>/root/nfs_share/SCRIPTS/temp.txt 

##</code><code>##

#!/usr/bin/perl
use warnings;
use strict;
my $cmd='nohup expect -f /root/nfs_share/SCRIPTS/ncp_run.tcl &';
my $tmp= `ps -ef | grep -v grep | grep ncp_run.tcl | wc -l`;
if($tmp == 1) {
print"already running\n";
} else {
print"not running\n";
system $cmd;
}