# Crontab

```
#	PATH=$PATH:/usr/local/bin
#	LANG=
#	LC_ALL=

### on reboot
#	@reboot   command

### on time
#	* * * * * command
###	| | | | |
###	| | | | |
###	| | | | |
###	| | | | |--| 0-7  day of week
###	| | | |    |
###	| | | |----| 1-12 month
###	| | |      |
###	| | |------| 1-31 day of month
###	| |        |
###	| |--------| 0-23 hours
###	|          |
###	|----------| 0-59 minutes
```