How can I tell if a cron job executes?

[Hektor]

How can I tell if a cron job executes? Are there logs or something that I can check to make sure everything happened like it should?

[Jordan]

You can look at /var/log/cron to see cron job information such as when it started, who ran it, when it ended, etc.

[Tor]

You could also add a tag to the script that sends an email to yourself on completion.