also known as cron tabs or cron tables.
cat /etc/crontab
we have hourly, daily, weekly, monthly tasks
then we have 2 files being run as root
the letters mean:
m h dom mon dow user command
minute hour day of month month day of week17 * * * * root cd / && run-parts --report /etc/cron.hourlyon the minute 17 of every hour, run this command as root. * means all/every
25 6 * * * root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.daily )at 6:25 AM every day, run this command as root.
* * * * * root overwrite.sh
* * * * * root /usr/local/bin/compress.shhappening every minute?