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Re: How can I find the -c argument?


From: Paul D. Smith
Subject: Re: How can I find the -c argument?
Date: Fri, 15 Apr 2005 21:32:34 -0400

%% Chet Ramey <address@hidden> writes:

  cr> Paul D. Smith wrote:
  >> This isn't a bug, actually.  I'm wondering if there's any way to
  >> access the string provided with the -c option to the shell, from
  >> within the shell init files.

  cr> The $BASH_EXECUTION_STRING variable exists in bash-3.0 for this
  cr> purpose.  The $BASH_COMMAND variable may also be used, but that
  cr> will probably be overwritten before you can make any use of it.

Ah.  But no general Bourne shell way to do it?

Thinking more clearly, what I actually need is a way to access that
string from within _ksh_, not bash.  What I'm trying to do is use bash
as my default shell on a system where the only shells they'll let me
have are csh, sh, and ksh.  Don't ask.

I can easily set up ksh's .profile to exec bash as my default shell
"normally", but when I log in from a windowing system this environment
will exec my shell as a login shell, passing the commands to be run (the
session manager, ssh-agent, or whatever) via -c.  In this case if I try
to re-exec bash I just get logged out again because the command string
given with -c doesn't last through the exec to the invocation of bash.


Currently I'm working around this by checking to see if -c was given
(looking in $-) and if so, I don't do the exec thing.  That means I'm
still using ksh here, but I do set SHELL to bash and it seems to mostly
work (my xterms all come out with bash, etc.)  Still, I'd like to be
able to re-exec bash if possible.

Cheers!

-- 
-------------------------------------------------------------------------------
 Paul D. Smith <address@hidden>          Find some GNU make tips at:
 http://www.gnu.org                      http://make.paulandlesley.org
 "Please remain calm...I may be mad, but I am a professional." --Mad Scientist




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