Re: [LUG] shell script

[Simon Waters <Simon@xxxxxxxxxxxxxxxxxxxx>]

paul wrote:
> I saved my homedirectory /home/pausut path in a file called pwd1, then using
> cd < pwd1 I changed it back to my home directory from the doomlegacy
> directory. otherwise the script would leave me in the doomlegacy directory.

Yes but the file pwd1 is in the wrong directory.

The reason it works is that the shell you are in doesn't change
it's current directory.

When you run the script it forks another shell, which changes
directory, runs the program, fails to change back and then
exits.

Try a script like;

#!/bin/bash
cd /tmp

To get the idea.

To run a program in the current shell you use "." thus if we
call the above "cdtmp" compare

./cdtmp
. ./cdtmp

> ----- Original Message -----
> From: "Simon Waters" <Simon@xxxxxxxxxxxxxxxxxxxx>
> To: <list@xxxxxxxxxxxx>
> Sent: Wednesday, June 19, 2002 10:13 AM
> Subject: Re: [LUG] shell script
>
> > > #/bin/bash
> > >
> > > if [ "$DISPLAY" ]; then
> > >  pwd > pwd1
> > >  cd /opt/legacy-1.32beta4
> > >  ./llxdoom
> > >  echo exiting game
> > >  cd < pwd1
> >
> > What pwd1 file would that be ;)
> >
> > Does "cd $OLDPWD" work in scripts I wonder.
> >
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Fear of heights. Everything else we call intuitive, such as
walking or using a pencil took years of practice." - Don Norman

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