Re: How to check repository/working tree status from a script

[Linus Torvalds <torvalds@linux-foundation.org>]

On Tue, 19 May 2009, Marc Haber wrote:
> 
> On Tue, May 19, 2009 at 04:34:47PM +0100, Tony Finch wrote:
> > On Tue, 19 May 2009, Marc Haber wrote:
> > > I would like to check in a script whether there (a) are uncommitted
> > > changes (as in "working tree differs from local repository")
> > 
> > # check working tree is not different from the index
> > git diff --quiet
> > # check that the index is not different from the head
> > git diff --quiet --cached
> 
> $ git diff --quiet; echo $?
> 0
> $ git diff --quiet --cached; echo $?
> 0
> $ touch keks
> $ git diff --quiet; echo $?
> 0
> $ git diff --quiet --cached; echo $?
> 0
> $
> 
> Am I missing something?

If "keks" is already something you know about, then 'touch' wouldn't have 
changed it, so diff won't show it.

And if what you want to know about is whether there are _new_ files you 
might want to check, then you need a third check: 'git ls-files'. You 
won't see it in the error code, but you can do

	others=$(git ls-files -o --exclude-standard)

and then check it 'others' is empty or not.

			Linus