Hi

I'm having a problem with the code below because the pid returned is not a running process. The script I'm calling process_tar.pl simply echos the filename and does a sleep 40, but its pid differs to the one returned below. 

$cmd="$scriptsdir/process_tar.pl $file >> /tmp/testlog &";            
+                            
$pid=open(PID,"|$cmd");
if(pidrunning($pid){
     print "PID $pid is running";
}else{
     print "PID $pid is not running";
}

# check if process is running
sub pidrunning{
        ($pid)=@_;
        $exists = kill 0, $pid;
        return $exists;
}

[download]

I wondered if it going wrong because of the ampersand at the end of the command? If I don't use the ampersand, the parent script waits until the command has completed which defeats the purpose of forking it. I have a feeling there might be a better way to do this, so if anyone can see what I'm doing wrong I'd appreciate any help.

Thanks,

js1'

In reply to wrong pid by js1

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