Jason Pyeron wrote: >> >>> For some reason I cannot fathom, >> >>> cron.hourly runs twice each hour >> >>> on one of my two CentOS-5.4 systems, > > Add this to the cron.hourly > > #!/bin/sh > pstree -up >> /tmp/foo.log I tried this; the relevant lines on the first machine are: ----------------------------------------- |-crond(9167)-+-crond(9439)---run-parts(9441)-+-awk(9452) | | `-foo(9450)--- pstree(9451) | `-crond(9440)---run-parts(9442)-+-awk(9455) | `-foo(9454)--- pstree(9456) |-cupsd(5301)---{cupsd}(17775) ----------------------------------------- and on the other CentOS machine: ----------------------------------------- |-crond(2824)---crond(28255)---run-parts(28256)---foo(28257)--- pstree(28258) ----------------------------------------- I've checked that /etc/rc.d/init.d/crond on the two machines are the same. So too is /etc/sysconfig/crond . I'm not clear why crond starts another copy of crond, even on the second machine? -- 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