

--------------------[begin listing ONE]-------------------

This one usually works.  It correctly determines if 
/etc/cron is running.

    ps -fu root | grep /etc/cron

    root  641    1 0 22:23:00   ?    0:00 /etc/cron

This one never works.  The sleep 2 simulates a heavily 
loaded system, causing grep always to find at least 
one "/etc/cron" in the ps output.

    ( sleep 2 ; ps -fu root ) | grep /etc/cron

    root  641    1 0 22:23:00   ?    0:00 /etc/cron
    root  221    1 0 22:36:25  01    0:00 grep /etc/cron

--------------------[end listing ONE]--------------------

