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Git 文件缓存分离组件 Git sym

Git sym是一款通过git符号链接的进行大文件处理的软件,其目的是从修订控制中分离出庞大的文件缓存。

特性:

  • Clones of the source repository are small and fast because no
    binaries are transferred, yet fully functional with complete metadata
    and incremental retrieval (git clone –depth has limited granularity and
    couples metadata to content).

  • git-bisect works properly even when versions of the binary files change over time. (We recommend installing a git-sym-post-checkout-hook, in case the resources have not been cached already.)

  • selective control of which large files to pull into the local store

  • Local fat object stores can be shared between multiple clones, even by different users.

  • can easily support fat object stores distributed across multiple hosts, and potentially anywhere in the world

  • depends only on stock Python and simple UNIX commands

安装:

您可以在您的$ PATH中通过调用git-sym运行这个git命令。

ln -sf `pwd`/git-sym ~/bin/git-sym

或者,您也可以直接运行:

python git-sym -h

基本用法:

repo用户

git-sym show
git-sym update

repo所有者

git-sym link --add my_big_file.gif
git commit -m 'git-sym added'
ls -l my_big_file.gif

或者更明确,利用规则检索

ln -sf .git_sym/my_big_data.v123.db my_big_data.db
git add my_big_data.db
git commit
cat <<EOF >> git_sym.makefile
my_big_data.v123.db:
        wget http://www.somewhere.com/my_big_data.v123.db
EOF
git-sym update

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