Question on Crontab Usage


I am planning at some point in my life on taking the RHCE test. I am used to using the web to find information however, I do not believe that I will have web access during the test. So I want to start relying more on the man pages. Unfortunetly they are letting me down

I looked up the fields in the crontab file online they are
minute, hour, day of the month, month, day of the week, command

This information is not available in the man, help, or info pages, as I can tell. I don't want to memorize all sorts of silly stuff like this when this test will be hard enough. Anyway I can find this information built into some help file on Linux itself? Thanks for your help
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

http:// thevpn.guruCommented:
Try this

apropos cron

anacron (8)          - runs commands periodically
anacrontab (5)       - configuration file for anacron
cron (8)             - daemon to execute scheduled commands (Vixie Cron)
crontab (1)          - maintain crontab files for individual users (V3)
crontab (5)          - tables for driving cron
kcron (8)            - Views and sets cron daemon configuration.

What you need is crontab(5)

man 5 crontab

This includes

       Commands are executed by cron(8) when the minute, hour, and month of year fields match the current time, and when at least one of the two day  fields
       (day  of  month,  or  day  of week) match the current time (see Note below).  cron(8) examines cron entries once every minute.  The time and date
       fields are:

              field          allowed values
              -----          --------------
              minute         0-59
              hour           0-23
              day of month   1-31
              month          1-12 (or names, see below)
              day of week    0-7 (0 or 7 is Sun, or use names)

       A field may be an asterisk (*), which always stands for first-last.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.