Author: joel (doc committer)
Date: Sun Apr 21 19:55:38 2013
New Revision: 249740
URL: http://svnweb.freebsd.org/changeset/base/249740

Log:
  Document a few expansions for the $PS1 and $PS2 environmental variables.
  
  PR:           173410
  Submitted by: Derek Wood <ddw...@outlook.com>
  Reviewed by:  jilles

Modified:
  head/bin/sh/sh.1

Modified: head/bin/sh/sh.1
==============================================================================
--- head/bin/sh/sh.1    Sun Apr 21 19:42:04 2013        (r249739)
+++ head/bin/sh/sh.1    Sun Apr 21 19:55:38 2013        (r249740)
@@ -32,7 +32,7 @@
 .\"    from: @(#)sh.1  8.6 (Berkeley) 5/4/95
 .\" $FreeBSD$
 .\"
-.Dd March 24, 2013
+.Dd April 21, 2013
 .Dt SH 1
 .Os
 .Sh NAME
@@ -1340,9 +1340,33 @@ The primary prompt string, which default
 .Dq Li "$ " ,
 unless you are the superuser, in which case it defaults to
 .Dq Li "# " .
+.Va PS1
+may include any of the following formatting sequences,
+which are replaced by the given information:
+.Bl -tag -width indent
+.It Li \eH
+The local hostname.
+.It Li \eh
+The fully-qualified hostname.
+.It Li \eW
+The final component of the current working directory.
+.It Li \ew
+The entire path of the current working directory.
+.It Li \e$
+Superuser status.
+.Dq Li "$ "
+for normal users and
+.Dq Li "# "
+for superusers.
+.It Li \e\e
+A literal backslash.
+.El
 .It Va PS2
 The secondary prompt string, which defaults to
 .Dq Li "> " .
+.Va PS2
+may include any of the formatting sequences from
+.Va PS1 .
 .It Va PS4
 The prefix for the trace output (if
 .Fl x
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