I'm sponsoring this open case for Roland Mainz it is number 1 in a
series of 4 cases addressing the default shell environment.
Template Version: @(#)sac_nextcase %I% %G% SMI
1. Introduction
1.1. Project/Component Working Name:
Default shell environment: machine ksh93/back environment
1.2. Name of Document Author/Supplier:
Author: Roland Mainz
1.3 Date of This Document:
25 April, 2007
4. Technical Description
Default shell environment enhancements: machine ksh93/bash environment
Description and Justification:
This case proposes to introduce a set of enhancements for the default
shell environment in Solaris to provide a more user-friendly environment
for new users which are not yet familar with all the details in Unix and
to provide some help for adminstrators via introducing better system-wide
defaults and more configuration options.
The proposed changes are:
- A change to "/etc/ksh.kshrc" which sets the default prompt (PS1)
for interactive ksh93 shell sessions to a value which displays the
username, hostname and current working directory and a "$ "-seperator
for normal users and "# " with the login name "root" (this follows the
default of SuSE Linux and aims at improving the usalibity for novice unix
users), e.g. setting the prompt to
$ PS1='${logna...@$(hostname):${PWD/~(El)${HOME}/\~}\$ ' # will result
in the following prompt (for user "gisburn" on machine "jupiterb48" with
CWD="/home/gisburn/solaris/"):
-- snip --
gisburn at jupiterb48:~/solaris$
-- snip --
If the prompt setting (PS1) is not desired as the
default, the "/etc/ksh.kshrc" file may be changed by the system
administrator, or the user may turn off or reset the prompt in their
per-user "~/.kshrc" configuration file, which is executed after
"/etc/ksh.kshrc".
- "/etc/bash.bashrc" as new file to the system, as a per-system
configuration file for interactive bash (Bourne Again Shell). This file
works the same way like ksh93's "/etc/ksh.kshrc" (except this one is for
the bash shell), e.g. "/etc/bash.bashrc" is sourced before the per-user
file "~/.bashrc".
The purpose of this file is to provide an admin-customizeable way to
set a
system-wide defaults interactive bash shell sessions.
The default line-editing mode will be set to "gmacs" to match the
behaviour
of ksh93 (see PSARC 2007/587) and the default prompt (PS1) will be set to
to a value which displays the username, hostname and current working
directory and a "$ "-seperator for normal users and "# " for uid 0
(this follows the default of SuSE Linux and the default for ksh93 as
proposed above).
If the "gmacs" editor mode or prompt setting (PS1) is not desired as the
default, the "/etc/bash.bashrc" file may be changed by the system
administrator, or the user may turn off or reset the editing mode and/or
prompt in their per-user "~/.bashrc" configuration file,
which is executed after "/etc/bash.bashrc".
Note that "/etc/bash.bashrc" is only used in bash initialization; it has
no effect on other shells.
- "/etc/bash.bash_logout" as a new file to the system as a per-system
configuration file for bash login shells. This file is executed at
logout time for bash shells which were used as login shell.
The current file content should be a file with comments only (for now).
Interfaces:
(note that both "/etc/bash.bashrc" and "/etc/bash.logout" are delivered
via OS/Net to keep the files at the same place as their ksh93 counterparts
and "/etc/profile").
Interface Stability Description
========= ========= ===========
shell-var "PS1" Committed Shell variable to define
the prompt for POSIX(-like) shells
/etc/ksh.kshrc Uncommitted Per-system configuration file for
interactive ksh93 sessions
/etc/bash.bashrc Uncommitted Per-system configuration file for
interactive bash sessions
/etc/bash.logout Uncommitted Per-system configuration file
bash login sessions, executed at
user logout time.
References:
1) Korn Shell 93 Integration external PSARC case which adds /etc/ksh.kshrc
http://www.opensolaris.org/os/community/arc/caselog/2006/587/
6. Resources and Schedule
6.4. Steering Committee requested information
6.4.1. Consolidation C-team Name:
ON
6.5. ARC review type: FastTrack
--
Darren J Moffat
