z/OS V1R9.0 UNIX System Services Command ... - Christian Grothoff

%# > (or the first character of the promptchars shell variable) for
normal users, # (or the second character of promptchars) for the
superuser.
%{string%}
Includes string as a literal escape sequence. It should be used only
to change terminal attributes and should not move the cursor
location. This cannot be the last sequence in prompt.
%? The return code of the command executed just before the prompt.
%R In prompt2, the status of the parser. In prompt3, the corrected
string. In history, the history string.
The bold, standout and underline sequences are often used to distinguish a
superuser shell. For example,
>set prompt = "%m [%h] %B[%@%b [%/] you rang?"
tut [37] [2:54] [/usr/accts/sys] you rang? _
Set by default to %# in interactive shells.
symlinks
Can be set to several different values to control symbolic link (’symlink’)
resolution:
v If set to chase, whenever the current directory changes to a directory
containing a symbolic link, it is expanded to the real name of the
directory to which the link points. This does not work for the user’s home
directory.
v If set to ignore, the shell tries to construct a current directory relative to
the current directory before the link was crossed. This means that cding
through a symbolic link and then cd..’ing returns one to the original
directory. This only affects built-in commands and filename completion.
v If set to expand, the shell tries to fix symbolic links by actually expanding
arguments which look like pathnames. This affects any command, not
just built-ins. Unfortunately, this does not work for hard-to-recognize
filenames, such as those embedded in command options. Expansion
may be prevented by quoting. While this setting is usually the most
convenient, it is sometimes misleading and sometimes confusing when it
fails to recognize an argument which should be expanded. A compromise
is to use ignore and use the editor command normalize-path (bound by
default to ^X-n) when necessary.
Some examples are in order. First, let’s set up some play directories:
> cd /tmp
> mkdir from from/src to
> ln -s from/src to/dist
Here’s the behavior with symlinks unset,
> cd /tmp/to/dist; echo $cwd
/tmp/to/dist
> cd ..; echo $cwd
/tmp/from
here’s the behavior with symlinks set to chase,
> cd /tmp/to/dst; echo $cwd
/tmp/from/src
> cd ..; echo $cwd
/tmp/from
tcsh
Chapter 2. Shell command descriptions 667