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environ Miscellany
user environment
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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), csh(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 root path to
:/bin:/usr/bin:/etc and others to :/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 that use special
capabilities of the terminal, such as vi(1).
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). Don't
use the following names for your own variables; they are
frequently exported by .profile files: MAIL, PS1, PS2, IFS. In
the csh, more names can be placed in the environment by the
setenv command. It is unwise to conflict with the variables
listed under "Pre-defined and environment variables" in csh(1).
SEE ALSO
exec(2).
env(1), login(1), sh(1), csh(1), nice(1), nohup(1), time(1), in
the User's Reference for the DG/UX System.
DG/UX 4.00 Page 1
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