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cron.md

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title category layout updated weight
Cron
CLI
2017/sheet
2017-08-26
-3

Format

{: .-two-column}

Format

Min  Hour Day  Mon  Weekday

{: .-setup}

*    *    *    *    *  command to be executed
┬    ┬    ┬    ┬    ┬
│    │    │    │    └─  Weekday  (0=Sun .. 6=Sat)
│    │    │    └──────  Month    (1..12)
│    │    └───────────  Day      (1..31)
│    └────────────────  Hour     (0..23)
└─────────────────────  Minute   (0..59)

{: .-setup.-box-chars}

Examples

Example Description
0 * * * * every hour
*/15 * * * * every 15 mins
0 */2 * * * every 2 hours
0 0 0 * 0 every Sunday midnight
--- ---
@reboot every reboot

Crontab

# Adding tasks easily
echo "@reboot echo hi" | crontab
# Open in editor
crontab -e
# List tasks
crontab -l [-u user]