Yakov Lerner <iler.ml@xxxxxxxxx> 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.
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