Question

我正在使用here中的这个脚本列出我的Git存储库中的大blob：

#!/bin/bash
#set -x 

# Shows you the largest objects in your repo's pack file.
# Written for osx.
#
# @see https://stubbisms.wordpress.com/2009/07/10/git-script-to-show-largest-pack-objects-and-trim-your-waist-line/
# @author Antony Stubbs

# set the internal field spereator to line break, so that we can iterate easily over the verify-pack output
IFS=$'\n';

# list all objects including their size, sort by size, take top 10
objects=`git verify-pack -v .git/objects/pack/pack-*.idx | grep -v chain | sort -k3nr | head`

echo "All sizes are in kB's. The pack column is the size of the object, compressed, inside the pack file."

output="size,pack,SHA,location"
for y in $objects
do
    # extract the size in bytes
    size=$((`echo $y | cut -f 5 -d ' '`/1024))
    # extract the compressed size in bytes
    compressedSize=$((`echo $y | cut -f 6 -d ' '`/1024))
    # extract the SHA
    sha=`echo $y | cut -f 1 -d ' '`
    # find the objects location in the repository tree
    other=`git rev-list --all --objects | grep $sha`
    #lineBreak=`echo -e "\n"`
    output="${output}\n${size},${compressedSize},${other}"
done

echo -e $output | column -t -s ', '

我对这一行感到有些疑惑：

objects=`git verify-pack -v .git/objects/pack/pack-*.idx | grep -v chain | sort -k3nr | head`

为什么grep -v chain（其中-v是反转匹配）？因此，您将获得提交， blob 和树对象。但二进制文件是不是总是存储在 blob 对象中？这意味着，对于定位大型二进制文件，您应该简单地执行： grep blob ？

我没有看到在结果集中包含树和提交对象的目的。

Answer 1

grep -v chain抛出这样的行：

chain length = 1: 44 objects
chain length = 2: 30 objects
chain length = 3: 15 objects
chain length = 4: 11 objects

实际上，它确实有点无意义，因为它们的字段3（-k3nr）的数值将是字符串＆＃34; =＆＃34;的数值，即零。

但二进制文件是不是总是存储在 blob 对象中？这意味着，对于定位大型二进制文件，您应该这样做： grep blob 而不是？

不确定。或者省略所有grep并在所有内容上运行它，包括表单的最后一行：

.git/objects/pack/pack-6a0a97d0239b29f4fef82f52b326317cd0cdd94f.pack: ok

树或提交或标记对象不太可能成为前十名，如果确实如此，可能会很有趣。

git验证包并仅返回blob对象

1 个答案: