Re: Newbie question: equiv of: cvs co -p <filename> ?

From: Linus Torvalds <torvalds@osdl.org>
Date: Aug 10, 2005, 00:36 UTC
Message-ID: <Pine.LNX.4.58.0508091725120.3258@g5.osdl.org>
In-Reply-To: <ddb8vl$ifq$1@sea.gmane.org>

On Tue, 9 Aug 2005, John Ellson wrote:

Show 5 quoted lines

> 
> I hacked this:
> 
> 	#!/bin/bash
> 	ID=`git-ls-files -s | grep $1 | cut -d ' ' -f 2`

No. "git-ls-files" shows the latest _index_ state, not the latest committed state.

Use "git-ls-tree HEAD pathname" to get the latest committed state for the pathname, and then pick out the SHA1 from there, use

	git-cat-file blob <sha1>

to cat the result.

Of course, this will work with any revision, not just HEAD. So you could do something like

	git-ls-tree $(git-rev-parse --default HEAD "$@") |
		while read mode type sha name
		do
			case "$type" in
			blob)
				git-cat-file blob "$sha"
				;;
			tree)
				git-ls-tree "$sha"
				;;
			*)
				exit 1
		done

(totally untested)

		Linus