@begin(header)
author: Eric Mandel
show_author: ShowNone
author_organization: Smithsonian Astrophysical Observatory
node_expert: eric@cfa.harvard.edu
expiration_date: 12/31/99
last_modifier: Eric Mandel
last_mod_date: 2/15/95
mod_num: 1
@end(header)
The Unix Environment/NoAction
 Start Unix Shell/unix