I had an odd problem with cron.
I made three perl scripts: LWP4.pl, LWP5.pl and LWP6.pl
During testing, I put the following entry in cron:
33 * * * * * LWP4.pl; LWP5.pl; LWP6.pl;
When it ran, I got 6 versions of each of these scripts running
concurrently and in order also.
They didn't start at exact same time, but as if LWP4.pl, then another
and another, etc.
When first version of LWP4.pl finished, then first version of LWP5.pl etc.
These scripts get a web page, extract values from matches, update
database, sleep, repeat for new pages until done with list of search values.
Chris Bennettf