[Chicago-talk] pid files and whatchamacalits.

[Dooley, Michael]

I have a perl script that runs via cron.

outside of checking for a pid file does anyone have any cleaner ways of
checking to see if the script is already running?

I was looking at Proc::PID_File. but I would like to try and stay with the
default install of perl.
This is perl, v5.8.0 built for sun4-solaris

Is below a standard way to do this?

if (-e "/tmp/pid.file") {
exit;
} else {
open (PID, ">/tmp/pid.file");
print PID $$;
close PID;
}