The software utility cron also known as cron job is a time-based job scheduler in Unix-like computer operating systems. Users who set up and maintain software environments use cron to schedule jobs to run periodicallly at fixed times, day, dates, or intervals.
crontab command
The crontab command is used to schedule commands to be executed periodically. Crontab uses a daemon, crond, which keeps running in background and checks once a minute to see if any of the scheduled jobs need to be executed.
crontab -l: To show all the current jobscrontab -e: TO edit or add new jobs
Cron Job Format
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