$ w;ps -t p4
 1:33PM  up  4:34, 4 users, load averages: 0.28, 0.23, 0.18
USER             TTY      FROM              LOGIN@  IDLE WHAT
phoemix          p2       :ttyp1:S.0        9:06AM  3:45 -su (bash)
phoemix          p3       :ttyp1:S.1        9:07AM  3:54 top
phoemix          p4       :ttyp1:S.2        1:03PM    28 [mpg321]
phoemix          p5       :ttyp1:S.3        1:33PM     - w
  PID  TT  STAT      TIME COMMAND
37940  p4  Is     0:00.20 /usr/local/bin/bash
37967  p4  S+     0:38.66 [mpg321]