BIND

Bind and the Domain Name System

Bind and the Domain Name System You want to analise your access logs once a week, restart your webserver daily, email your sercurity logs to yourself hourly, run MRTG every minute or reboot your server once a year (well ok probably not the last one). How do you get your server to do this on your, behalf? Cron the Scheduler is your answer. The command you need is:

crontab -e

        string         meaning
        ------         -------
        @reboot        Run once, at startup.
        @yearly        Run once a year, "0 0 1 1 *".
        @annually      (same as @yearly)
        @monthly       Run once a month, "0 0 1 * *".
        @weekly        Run once a week, "0 0 * * 0".
        @daily         Run once a day, "0 0 * * *".
        @midnight      (same as @daily)
        @hourly        Run once an hour, "0 * * * *".

 EXAMPLE CRON FILE
	# use /bin/sh to run commands, no matter what /etc/passwd says
        SHELL=/bin/sh
        # mail any output to `andrew', no matter whose crontab this is
        MAILTO=andrew
        #
        # run five minutes after midnight, every day
        5 0 * * *       $HOME/bin/daily.job >> $HOME/tmp/out 2>&1
        # run at 2:15pm on the first of every month -- output mailed to andrew
        15 14 1 * *     $HOME/bin/monthly
        # run at 10 pm on weekdays, annoy andrew
        0 1 * * 1-5    mail -s "It's 1am" andrew%andrew,%%Go to bed!%
        23 0-23/2 * * * echo "run 23 minutes after midn, 2am, 4am ..., everyday"
        5 4 * * sun     echo "run at 5 after 4 every sunday"