ENVIRON(5)                                             ENVIRON(5)



     NAME
          environ - user environment

     DESCRIPTION
          An array of strings called the ``environment'' is made
          available by exec(2) when a process begins.  By convention,
          these strings have the form ``name=value''.  The following
          names are used by various commands:

          PATH The sequence of directory prefixes that sh(1), time(1),
               nice(1), nohup(1), etc., apply in searching for a file
               known by an incomplete path name.  The prefixes are
               separated by colons (:).  login(1) sets
               PATH=:/bin:/usr/bin.
          HOME Name of the user's login directory, set by login(1)
               from the password file passwd(4).
          TERM The kind of terminal for which output is to be
               prepared.  This information is used by commands, such
               as mm(1) or tplot(1G), which may exploit special
               capabilities of that terminal.
          TZ   Time zone information. The format is xxxnzzz where xxx
               is standard local time zone abbreviation, n is the
               difference in hours from GMT, and zzz is the
               abbreviation for the daylight-saving local time zone,
               if any; for example, EST5EDT.

          Further names may be placed in the environment by the export
          command and ``name=value'' arguments in sh(1), or by
          exec(2).  It is unwise to conflict with certain shell
          variables that are frequently exported by .profile files:
          MAIL, PS1, PS2, IFS.

     SEE ALSO
          exec(2).
          env(1), login(1), sh(1), nice(1), nohup(1), time(1),
          tplot(1G) in the User's Reference Manual.
          mm(1) in the DOCUMENTER'S WORKBENCH Software Release 2.0
          Technical Discussion and Reference Manual.

     ORIGIN
          AT&T V.3














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