Shell feedback
  If you don't have anything important to say, don't say anything.
  Commands generally output nothing if all went well.
  Commands set their 'exit status' (available via the $? variable) to zero on success, or non-zero on failure.
  Error and informational output is sent to stderr, not stdout.
  Example:
      $ rm /path/to/file
      $ echo $?
      0
      $

Copyright 2005, Bri Hatch of Onsight, Inc.

Presented at LFNW - LinuxFest Northwest, Bellingham, Washington, Apr 2005

Presentation created using vim and MagicPoint.