I was trying to set up a cron job on my Red Hat 7.2 box.
The content is
But the system return the following error.
What am I doing wrong?? If I want a cron job to wake up and do stuff every 15 minutes, what should I do? How to set up the cron?
[root@supra cron.hourly]# crontab -u sysadmin -e
no crontab for sysadmin - using an empty one
crontab: installing new crontab
"/tmp/crontab.9201":1: bad day-of-month
errors in crontab file, can't install.
Do you want to retry the same edit?