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Message-ID: <718198F862F1D411B10F0002A50A4DB1059FEA43@e90wwce3.dx.deere.com>
From: "Polley Christopher W" <PolleyChristopherW AT JohnDeere DOT com>
Reply-to: cygwin AT cygwin DOT com
To: "'cygwin AT cygwin DOT com'" <cygwin AT cygwin DOT com>
cc: "'Jon LaBadie'" <jcyg AT jgcomp DOT com>
Subject: RE: cygwin.bat suggestions
Date: Thu, 11 Jul 2002 12:12:03 -0500
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> -----Original Message-----
> From: Jon LaBadie
> 
> On Wed, Jul 10, 2002 at 12:44:19PM -0500, Polley Christopher W wrote:
> > 
> > > From: Jon LaBadie
> > > 
> > > One thing I would like to do is replace "set SHELL=/bin/ksh" with
> > > 
> > >     SHELL=$(grep "^${USER}:" /etc/passwd | cut -d: -f7)
> > >     : ${SHELL:=/bin/ksh}
> > > 
> >
> > How about:
> > 
> > ------>8--------
> > @echo off
> > 
> > C:
> > chdir \cygwin\bin
> > 
> > rem set SHELL to user's shell (from /etc/passwd)
> > bash -c "echo -n 'set SHELL='> temp_setShellEnvVar.bat"
> > grep "^%USERNAME%:" /etc/passwd | cut -d: -f7 >> 
> temp_setShellEnvVar.bat
> > call temp_setShellEnvVar.bat
> > del temp_setShellEnvVar.bat
> >  
> > rxvt --loginShell -geometry 108x32 -fn 10x20 -sr +ut
> > 
> > ------>8--------
> > 
> > (window's 'echo' is unable to write to a line without a 
> crlf at the end, and
> > AFAIK, there's no backtick equivalent in batch programming)
> 
> Chris,
> first tests show it working.  I never considered mixing 
> cygwin calls in a .bat.
> 
> To save me from learning batch file programming, one last 
> thing please.
> 
> The possibility exists that column seven in /etc/passwd is 
> empty (a valid situation).
> In that case the code would be setting SHELL= , i.e. a null 
> value.  I'd like to
> supply a default (probably /bin/bash).  In shell it would be 
> easy, in batch I
> guess it would take an if statement (assuming they exist in 
> batch).  The cumbursome
> shell way would be something like:
> 
> 	if [[ ${SHELL} = "" ]]
> 	then
> 		export SHELL=/bin/bash
> 	fi
> 
> Would something similar be available in batch?  A guess:
> 
> 	if %SHELL% = "" set SHELL=/bin/passwd
> 

This is close, but when doing string comparisons in batch, you need to quote
both sides:

if "%SHELL%" = "" set SHELL=/bin/bash


-Chris


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