UBB.Developers Forums UBB.threads 7 Development How Do I? help with CRON pls, namely doexpire.pl

The reason it says command not found when trying to run a program in the current directory from the command line is most probably because the current directory isn't in the path. Putting "./" in front of the command changes that, like so:
./doexpire.php

But in this case it won't work anyway, since php-scripts have to be run via the php binary as stated before.