Remove all files except a few files, using filter-branch

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Remove all files except a few files, using filter-branch

Yi EungJun
Hi, all.

I want to remove all files except a few files, in the history of my
git repository.

I tried to do that as follows:

    git filter-branch --index-filter "git rm --cached --ignore-unmatch
$(git ls-files | grep -v '^filename$' | tr '\n' ' ')"

But this does not work well if there is a file whose name is not
encoded in us-ascii or includes parenthesis. git-filter-branch is
great to remove some files in my repository, but not good enough to
remove all except only a few.

Does anyone know the better way?
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Re: Remove all files except a few files, using filter-branch

Andreas Schwab-3
"Yi, EungJun" <[hidden email]> writes:

> Hi, all.
>
> I want to remove all files except a few files, in the history of my
> git repository.
>
> I tried to do that as follows:
>
>     git filter-branch --index-filter "git rm --cached --ignore-unmatch
> $(git ls-files | grep -v '^filename$' | tr '\n' ' ')"

Try instead first removing all files, then restoring the files you want
to keep.

--index-filter "git rm --cached -qr -- . && git reset -q -- filename"

Andreas.

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Re: Remove all files except a few files, using filter-branch

Yi EungJun
> --index-filter "git rm --cached -qr -- . && git reset -q -- filename"

Hmm... I tried as you said, but it seems to lose history.

In the below example, after rewriting there must be two commits for
'b' file but only one exists.

~$ git init filter-branch2
Initialized empty Git repository in
/home/nori/mysrc/test/git/filter-branch2/.git/
~/filter-branch2$ cd filter-branch2
~/filter-branch2$ echo 1 > a
~/filter-branch2$ echo 1 > b
~/filter-branch2$ git add a b
~/filter-branch2$ git commit -m 'first'
[master (root-commit) ae2b5fd] first
 2 files changed, 2 insertions(+)
 create mode 100644 a
 create mode 100644 b
~/filter-branch2$ echo 2 >> b
~/filter-branch2$ git add b
~/filter-branch2$ git commit -m 'second'
[master a32b84e] second
 1 file changed, 1 insertion(+)
~/filter-branch2$ git filter-branch --index-filter "git rm --cached
-qr -- . && git reset -q -- b"
Rewrite a32b84ed7cec5686e43a47195dfa8114f83619f3 (2/2)
Ref 'refs/heads/master' was rewritten
~/filter-branch2$ git log -- b
commit 19611f9eaf412232e237afcc059d0324a862062f
Author: Yi EungJun <[hidden email]>
Date:   Tue Sep 18 23:51:53 2012 +0900

    first

Am I doing something wrong?

On Mon, Sep 17, 2012 at 2:06 AM, Andreas Schwab <[hidden email]> wrote:

> "Yi, EungJun" <[hidden email]> writes:
>
>> Hi, all.
>>
>> I want to remove all files except a few files, in the history of my
>> git repository.
>>
>> I tried to do that as follows:
>>
>>     git filter-branch --index-filter "git rm --cached --ignore-unmatch
>> $(git ls-files | grep -v '^filename$' | tr '\n' ' ')"
>
> Try instead first removing all files, then restoring the files you want
> to keep.
>
> --index-filter "git rm --cached -qr -- . && git reset -q -- filename"
>
> Andreas.
>
> --
> Andreas Schwab, [hidden email]
> GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
> "And now for something completely different."
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Re: Remove all files except a few files, using filter-branch

Johannes Sixt-2
Am 9/18/2012 17:01, schrieb Yi, EungJun:
>> --index-filter "git rm --cached -qr -- . && git reset -q -- filename"
>
> Hmm... I tried as you said, but it seems to lose history.

I think it should be '... && git reset -q $GIT_COMMIT -- filename'

-- Hannes
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Re: Remove all files except a few files, using filter-branch

Yi EungJun
> I think it should be '... && git reset -q $GIT_COMMIT -- filename'

It works! Thanks to Hannes and Andreas!

On Wed, Sep 19, 2012 at 12:10 AM, Johannes Sixt <[hidden email]> wrote:
> Am 9/18/2012 17:01, schrieb Yi, EungJun:
>>> --index-filter "git rm --cached -qr -- . && git reset -q -- filename"
>>
>> Hmm... I tried as you said, but it seems to lose history.
>
> I think it should be '... && git reset -q $GIT_COMMIT -- filename'
>
> -- Hannes
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