crontab

Use

crontab -l
EDITOR=micro crontab -e
crontab -l > ~/crontab.after 2>/dev/null || true

What It Does

crontab lists or edits scheduled jobs for your user account. Cron jobs run with a small environment, so use absolute paths such as /home/username/cron.log rather than ~/cron.log.

Practice

Before editing, save a backup:

crontab -l > ~/crontab.backup 2>/dev/null || true

After editing, list the result:

crontab -l

Watch Out

Do not use crontab -r while learning. It removes the whole crontab. Remove only the line you added, then verify with crontab -l.

Docs Pointers

• Run man crontab and man 5 crontab.
• Read cron and automation timers.