DE

↑ ↓ select, Enter open, Esc close

Show the cron log: when which job ran

harmless rootCrondebian, ubuntu
Adjust the values, the command updates live
root@server
journalctl -u cron --since today --no-pager

Filters the journal for the cron unit and shows lines like (webuser) CMD (php /var/www/...), which record every started job with user and command. This lets you check whether a job was triggered at the expected time at all. Whether it succeeded is not shown here; for that, the job has to log its own output.

Note: On systems with rsyslog, the same entries can be found with grep CRON /var/log/syslog.

Also searched as

  • is my cron job running at all
  • show cron log
  • when did the cron job run
  • check cron execution

Related one-liners

All in Cron

Add a cron job that logs its output

$(crontab -l 2>/dev/null; echo "*/15 * * * * /usr/bin/php /var/www/vhosts/example.com/httpdocs/wp-cron.php >> /var/www/vhosts/example.com/logs/wp-cron.log 2>&1") | crontab -
cautionCron

Check which scripts in cron.daily actually run

$run-parts --test /etc/cron.daily
harmlessCron

Find out which cron job runs a command

#grep -rn "wp-cron.php" /etc/crontab /etc/cron.d /etc/cron.hourly /etc/cron.daily /etc/cron.weekly /etc/cron.monthly /var/spool/cron/crontabs 2>/dev/null
harmlessCron

Prevent overlapping cron jobs with flock

$flock -n /tmp/backup.lock /usr/local/bin/backup.sh
harmlessCron

Run all scripts in cron.daily right now

#run-parts --verbose /etc/cron.daily
cautionCron

Show currently running cron jobs

$ps -eo pid,user,etime,cmd --forest | grep -A3 '[C]RON'
harmlessCron

Read first, then run.

The commands on myline.de act directly on servers, files and databases. A wrong path or placeholder can delete data irreversibly or make a server unreachable.

  • All commands are provided without warranty and are not tested on every system.
  • Understand what a command does before running it, and check every placeholder.
  • Make a backup first and, if possible, try it on a test system.
  • You run commands at your own risk. Liability for damages is excluded to the extent permitted by law.