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Re: current repository hash

From
SBSanti Béjar <sbejar@gmail.com>
Date
Jun 16, 2008, 12:15 UTC
Message-ID
<8aa486160806160515p751b2af4j2b0db6db7a9ad482@mail.gmail.com>
In-Reply-To
<556d90580806160451g36daefb6o48b93b92589211bf@mail.gmail.com>
On Mon, Jun 16, 2008 at 13:51, Alf Clement <alf.clement@gmail.com> wrote:
Show 7 quoted lines
> Hi all,
>
> I want to compile the current repository hash id into my program, to
> be able to checkout later this
> id an see the exact files for the compile. It should flag if there are
> currently modified files in the
> directory tree.
You can look at how git does it:
http://git.kernel.org/?p=git/git.git;a=blob;f=GIT-VERSION-GEN;hb=HEAD
>
> What would be the best command to get a unique identifier?

"git rev-parse HEAD" for a unique identifier, but "git describe" is more convenient/useful.

> Do I need the 40 digit hash id?
Normally 7 or 8 are sufficient.
> How can I make sure that a shorter hash id will be unique?

You can't. Even the 40 digit hash is "only" cryptographically unique. But within a project 7 or 8 digits are unique enough for practical use.

Santi
Previous: David TweedNext: Alf Clement
Message 3 of 9 in “current repository hash”
  1. Alf ClementJun 16, 2008
  2. David TweedJun 16, 2008
  3. Santi BéjarJun 16, 2008
  4. Alf ClementJun 16, 2008
  5. Jeff KingJun 16, 2008
  6. Alf ClementJun 17, 2008
  7. Johan HerlandJun 17, 2008
  8. Jeff KingJun 16, 2008
  9. Johannes SchindelinJun 17, 2008

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