CRON (crontab info.)

From a Unix prompt type the following:

crontab –l (to list out the contents of the crontab.)
crontab –e (to edit the contents of the crontab.)
crontab –v (to verify the crontab.)
crontab –r (to remove the contents of the crontab.) Careful, as an ‘e’ and ‘r’ are next to each other on the keyboard.



Here is a header I put in all my crontab’s:

# Parameter 1: Minute <0-59>
# Parameter 2: Hour <0-23>
# Parameter 3: Day of the Month <1-31>
# Parameter 4: Month <1-12>
# Parameter 5: Day of the Week <0-6 sunday="0">
# Parameter 6: Command
# Place a comma between multiple values
# Place a hyphen to indicate a range
# Place an asterisk to indicate all possible values.
#############################################