04-01-2009
ah, I see what you mean. As I only have a Linux machine here, I can't say for "real" ksh but pdksh does not understand \u@\h: \w escapes for the PS1 variable. They appear to only apply to bash.
Having just looked it up, the escape sequences only applie to bourne type shells not to korn or csh. To have dynamic, colourful prompts with those shells you are going to have to be more creative. (chapter 4 of "Unix Power Tools" has a very good section on prompts).
UNIX Power Tools - Google Book Search
Last edited by wempy; 04-01-2009 at 05:13 PM..
Reason: added more information
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shells(4) File Formats shells(4)
NAME
shells - shell database
SYNOPSIS
/etc/shells
DESCRIPTION
The shells file contains a list of the shells on the system. Applications use this file to determine whether a shell is valid. See getuser-
shell(3C). For each shell a single line should be present, consisting of the shell's path, relative to root.
A hash mark (#) indicates the beginning of a comment; subsequent characters up to the end of the line are not interpreted by the routines
which search the file. Blank lines are also ignored.
The following default shells are used by utilities: /bin/bash, /bin/csh, /bin/jsh, /bin/ksh, /bin/pfcsh, /bin/pfksh, /bin/pfsh, /bin/sh,
/bin/tcsh, /bin/zsh, /sbin/jsh, /sbin/sh, /usr/bin/bash, /usr/bin/csh, /usr/bin/jsh, /usr/bin/ksh, /usr/bin/pfcsh, /usr/bin/pfksh,
/usr/bin/pfsh, and /usr/bin/sh, /usr/bin/tcsh, /usr/bin/zsh. Note that /etc/shells overrides the default list.
Invalid shells in /etc/shells may cause unexpected behavior (such as being unable to log in by way of ftp(1)).
FILES
/etc/shells lists shells on system
SEE ALSO
vipw(1B), ftpd(1M), sendmail(1M), getusershell(3C), aliases(4)
SunOS 5.10 4 Jun 2001 shells(4)