# edit cron tab in order to add a new cron job for the current user
crontab -e
# show current cron jobs
crontab -l
# cron jobs saved here:
sudo cat /var/spool/cron/crontabs/adr
# job info
sudo service cron status
ls -l /var/spool/cron/crontabs/adr
-rw------- 1 adr crontab 1.2K Oct 20 11:01 /var/spool/cron/crontabs/adr