How would one go about finding out if another copy of a CGI Perl _script_s is running? I want to set up a _script_ to run as a cron job, starting about once a minute, however, the first thing I want to do when the _script_ starts is to check and see if the last incarnation is still (highly unlikly but could happen on very busy days) running and shut down if it is, so that there is only one version of the _script_ proccessing data. Lisa