From: Shawn O. Pearce <spearce@spearce.org>
Date: Tue, 11 Mar 2008 07:24:12 GMT
Subject: Re: Is a given file known to git?
Message-ID: <20080311072412.GP8410@spearce.org>
In-Reply-To: <47D6317D.7030700@melosgmbh.de>

Christoph Duelli <duelli@melosgmbh.de> wrote:
> Given a repository and a path p to a file in it:
> Is it possible (how?) to detect (in a bash script) if the file pointed 
> to by p is "known" to git?
> Something along the line:
> if `git knows p?
> then
> ...
> fi

Depends on your definition of "known to git".  You can look at
the current index, which may have files newly added but not yet
committed:

	if test $(git ls-files "$p" | wc -l) -gt 0
	then
	...
	fi

you can look at a specific committed state too:

	if git cat-file -e "$commit:$p" 2>/dev/null
	then
	...
	fi

where $commit can be any tree-ish, so a tag, a branch, a commit,
the symbolic-ref HEAD... etc.

-- 
Shawn.