From: Shawn O. Pearce Date: Thu, 12 Apr 2007 23:40:32 GMT Subject: Re: sha1 of the repo excluding history ? Message-ID: <20070412234032.GE12979@spearce.org> In-Reply-To: Yakov Lerner wrote: > Can I obtain from git the sha1 of the total last state of the > repo excluding history ? This is a state that covers contents and > names of all files and dirs, and x perm of files; > but excludes history, timestamps, ownerhisp, and inode numbers. > > That would be approximately like the slow method: > 'find | egrep -v '/\.git(/|$)' | sort | Xcpio -o | sha1sum -' > (imagining Xcpio that does not archive any ownership, timestamps, > and inode numbers). Can I obtain this result immediately from git ? git rev-parse HEAD^{tree} The trick here is ^{tree}; this operator takes a commit-ish (commit or tag) and returns the SHA-1 of the tree that the commit-ish points at. That SHA-1 is the SHA-1 of the file contents, names, and executable bits, but nothing else. No history. I use it sometimes after a rebase when I reorganize history: old=`git rev-parse HEAD^{tree}` .... do rebasing magick ... test $old = `git rev-parse HEAD^{tree}` && echo GOOD If I don't get back GOOD then I know I somehow changed the files in a way that isn't what I had before, and that wasn't what I wanted if all I was doing was cleaning up commit messages. -- Shawn.