Off-python-topic: Cron jobs on linux...help

[Fredrik Lundh]

Chris Richard Adams wrote:
> I'd like to ask two things about the cron tool that comes with Linux -
> have RedHat 6.2.

not written in Python, is it?

> 1.) I have a script that runs fine when I am logged in a the user who
> owns it.  I have env variables that are needed and these are loaded in
> the .bash_profile as that user logs in.  As that user, I set a cron job
> putting the pathname of the script.  It runs, but fails because it
> appears the  environment vars are not set.  I can work around it by
> putting all the vars in the script of course, but what might be the
> problem?
>
> 2.) I want the script to run each 20 minutes.  With only the 5 time
> parameters to set, I can't do this?

$ man 5 crontab

Cheers /F