crontab -e. Don't
run crontab without command line arguments because that
cancels all the commands currently scheduled by crontab.Crontab file is of the following format:
minute hour date month weekday command
For example, to run httpd_wais_update every Monday
morning at 5:10, you would make an entry:
10 5 * * 1 /usr/local/bin/httpd_wais_update
* means that those fields are not relevant (in our
example: "no matter what date and month it is, if it is Monday 5:10am,
run this"). The days go from Sunday (0) to Saturday (6). See crontab(1)
and crontab(5)
for more details.AL 6 April 1994