[ale] How to expand to full-path name?

[Ken Alexander]

On Thu, 2007-08-09 at 11:54 -0400, Ken Alexander wrote:

> On Thu, 2007-08-09 at 10:57 -0400, Tim Watts wrote: 
> 
> > Hi,
> > 
> > Suppose I have MyScript in /home/me/bin which does this:
> > 
> > 	#!/bin/sh
> > 	SCRIPT_HOME=`dirname $0`
> > 	echo home=$SCRIPT_HOME
> > 
> > Now I run it from /home/me/bin which produces:
> > 
> > 	home=.
> > 
> > How can I expand SCRIPT_HOME into the full path name (i.e. /home/me/bin)?
> > _______________________________________________
> > Ale mailing list
> > Ale at ale.org
> > http://www.ale.org/mailman/listinfo/ale
> 
> 
> $0 is whatever you typed in at the command line. So you can call the
> script with the absolute path. Instead of "./script" use
> "/full/path/to/script".
> 
> You can use `pwd` as someone already said, but that's going to give
> you whichever directory you are in when the script is run. Not
> necessarily the directory the script resides in.  So, if you need this
> to work from anywhere, you can maybe do an if statement to check
> whether $0 gives you an absolute path. 
> 
> quick and dirty ....
> 
> script_home=$(dirname $0)
> if [ ${script_home:0:1} != '/' ]
> then
>    cd ${script_home}
>    script_home=`pwd` # corrected line
>    cd - >  /dev/null
> fi
> echo home=${script_home}
> 
> -KA 
> 
> _______________________________________________
> Ale mailing list
> Ale at ale.org
> http://www.ale.org/mailman/listinfo/ale


oops, typo. see above
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