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This article is to share with you about the skills of using Crontab in linux. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

You can script the commands you need to deal with and put them in bats.sh.

Use crontab-e for editing and call timing execution.

# [minutes] [hours] [day of the month] [month] [day of the week] [command]

30 * / home/netroby/backup/autobak.sh

# * / 30 means every 30 minutes. If it says 30 here, that's 30 minutes per hour.

Example of the content in bats.sh

#! / bin/sh

Export GIT_DIR= "/ home/user/backup/vhosts/.git"

/ usr/bin/ssh user@www.domain.com "cd / vhosts/ & &. / backup.sh & & git commit-am 'backup'"

Cd / home/user/backup/vhosts/

/ usr/bin/git pull origin master

Variables must be exported. Without variables, the execution of the program is wrong.

The path should use an absolute path, and the executed directory must go to the absolute location.

Cron's log is in / var/log/syslog.

Vim-R / var/log/syslog can view the cron log.

Crontab-l lists the timers currently scheduled. Crontab-e edit timer, can be increased or decreased, crontab-r is the clear timer.

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