init
su
ps
ls –l
kill
whoami
crond
crontab
15 8 * * *0 /sbin/quotacheck
/var/spool/cron/crontabs directory.
crond -u -root /sbin/quotacheck
crontab /var/spool/cron/crontabs/quota
crond /var/spool/cron/quota
cron /var/spool/cron/quota
crontab -u -root /var/spool/cron/crontabs/quota