On 2008-04-10, Helmut Kreft <kreft@unfug.org> wrote:
> crontab -l | (cat;echo "00 1 * * * /monitor_file_system") | crontab

Yup but the cat process can be avoided:

(crontab -l; echo "00 1 * * * /monitor_file_system") | crontab

Andreas.