Head Pic: 「恋恋 匕首」/「千夜QYS3」[pixiv]
Crontab is a file that schedules commands running any time you want.
The daemon, which is crond, of crontab will check scheduled works every minute.
Every user has its own crontab file, which named by its name in
In this file, every line stands for a task and every field in each line stands for a configuration.
# -- minute(0 - 60)
backup.sh will be executed at 03:50 every day.
50 3 * * * /home/backup/backup.sh
Absolute directory must be used if you run a script.