A crontab can also be tested. To do this you have to SSH to the machine, usually as admin to run the command.

For example, to test the my-brilliant-site.com crontab navigate to /srv/my-brilliant-site.com/config/ and run symbiosis-crontab --test crontab.

The my-brilliant-site.com crontab reads

# Send any output to Bob
#
MAILTO=bob@my-brilliant-site.com

#
# run at 18:40 every day
#
40 18 * * *       echo Hello Dave.

#
# run at 9am every Monday - Friday
#
0   9 * * mon-fri wget http://www.my-brilliant-site.com/cron.php

#
# Run once a month
#
@monthly          /usr/local/bin/monthly-job.sh

Therefore the output generated is

 Environment
 ------------------------------------------------------------------------
 HOME = /srv
 LOGNAME = admin
 PATH = /usr/local/bin:/usr/bin:/bin
 MAILTO = bob@my-brilliant-site.com
 ========================================================================

 Jobs next due -- Local time 2010-06-17T17:57:37+01:00
 ------------------------------------------------------------------------
 Date                       Command
 ------------------------------------------------------------------------
 2010-06-17T18:40:00+01:00  echo Hello Dave.
 2010-06-18T09:00:00+01:00  wget http://www.my-brilliant-site.com/cron.php
 2010-07-01T00:00:00+01:00  /usr/local/bin/monthly-job.sh
 ========================================================================