How crontab saves and exits and starts and restarts commands
The Ubuntu system uses crontab to regularly execute python scripts
After the crontab-e configuration is complete, how to save and exit?
1.Ctrl+O write
two。 "FIile name to Write..." appears, enter Enter
3.Ctrl+x save output
The prompt "crontab:installing new crontab" indicates success.
(under root authority)
Crontab startup: / etc/init.d/cron start (service cron start)
Crontab restart: / etc/init.d/cron restart (service cron restart)
Crontab shutdown: / etc/init.d/cron stop (service cron stop)
In the terminal, you can use ps-aux | grep cron to query the crontab status, which is self-starting by default.
