Jeff wrote: >> For some reason I cannot fathom, >> cron.hourly runs twice each hour >> on one of my two CentOS-5.4 systems, > hourly, daily, weekly and monthly jobs are configured in /etc/crontab. > What's your /etc/crontab look like? Are you seeing the same behavior > for daily/weekly jobs? Have you simply tried restarting the cron > service? I have indeed - several times, as well as re-booting the system. My crontab is the original, I think: --------------------------------- [root at helen tim]# cat /etc/crontab SHELL=/bin/bash PATH=/sbin:/bin:/usr/sbin:/usr/bin MAILTO=root HOME=/ # run-parts 01 * * * * root run-parts /etc/cron.hourly 02 4 * * * root run-parts /etc/cron.daily 22 4 * * 0 root run-parts /etc/cron.weekly 42 4 1 * * root run-parts /etc/cron.monthly --------------------------------- /etc/anacrontab reads: --------------------------------- [root at helen tim]# cat /etc/anacrontab # /etc/anacrontab: configuration file for anacron # See anacron(8) and anacrontab(5) for details. SHELL=/bin/sh PATH=/sbin:/bin:/usr/sbin:/usr/bin MAILTO=root 1 65 cron.daily run-parts /etc/cron.daily 7 70 cron.weekly run-parts /etc/cron.weekly 30 75 cron.monthly run-parts /etc/cron.monthly --------------------------------- I see now that /etc/cron.daily also runs twice: --------------------------------- Mar 16 04:01:02 helen crond[22696]: (root) CMD (run-parts /etc/cron.hourly) Mar 16 04:01:02 helen crond[22699]: (root) CMD (run-parts /etc/cron.hourly) Mar 16 04:02:01 helen crond[22723]: (root) CMD (run-parts /etc/cron.daily) Mar 16 04:02:01 helen crond[22724]: (root) CMD (run-parts /etc/cron.daily) Mar 16 04:02:01 helen anacron[22742]: Updated timestamp for job `cron.daily' to 2010-03-16 Mar 16 04:02:11 helen anacron[23204]: Updated timestamp for job `cron.daily' to 2010-03-16 --------------------------------- crond is only running once: --------------------------------- [root at helen tim]# ps aux | grep cron root 5978 0.0 0.0 61152 732 pts/1 S+ 12:15 0:00 grep cron root 16700 0.0 0.0 74816 1236 ? Ss Mar15 0:01 crond --------------------------------- I remain mystified ... -- Timothy Murphy e-mail: gayleard /at/ eircom.net tel: +353-86-2336090, +353-1-2842366 s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland