For some reason many admins forget the field order of the
crontab file and alway reference the man pages over-and-over.
Make your life easy. Just put the field definitions in
your crontab file and comment (#) the lines out so the
crontab file ignores it.
#minute (0-59),
#| hour (0-23),
#| | day of the month (1-31),
#| | | month of the year (1-12),
#| | | | day of the week (0-6 with 0=Sunday).
#| | | | | commands
0 2 * * 0,4 /etc/cron.d/logchecker
NOTE: All tips provided are USE AT YOUR OWN RISK. Tips are submitted
by various unix admins around the globe. UGU suggest you read and
test each tip in a non-volitile environment before placing into
production.