krusty:/J 530 bash$ rpm -qf /bin/ps
procps-2.0.6-1
krusty:/J 531 bash$ /bin/ps aux
USER       PID %CPU %MEM   VSZ  RSS TTY      STAT START   TIME COMMAND


Signal 4 caught by ps (procps version 2.0.6).
Please send bug reports to <procps-bugs@redhat.com>
krusty:/J 532 bash$ /bin/ps ax
  PID TTY      STAT   TIME COMMAND
    1 ?        S      0:15 init
    2 ?        SW     0:05 [kflushd]
    3 ?        SW     1:57 [kupdate]
...