root@vuuno:~# crontab
BusyBox v1.15.3 (2012-08-29 12:06:50 CEST) multi-call binary
Usage: crontab [-c DIR] [-u USER] [-ler]|[FILE]
-c Crontab directory
-u User
-l List crontab
-e Edit crontab
-r Delete crontab
FILE Replace crontab by FILE ('-': stdin)
root@vuuno:~#