From: Antony Stubbs <antony.stubbs@gmail.com>
Date: Fri, 10 Jul 2009 01:16:50 GMT
Subject: [script] find largest pack objects
Message-ID: <A67AA762-487D-4CFB-B555-718C88C5787D@gmail.com>

Blog post about git pruning history and finding large objects in your  
repo: http://stubbisms.wordpress.com/2009/07/10/git-script-to-show-largest-pack-objects-and-trim-your-waist-line/

This is a script I put together after migrating the Spring Modules  
project from CVS, using git-cvsimport (which I also had to patch, to  
get to work on OS X / MacPorts). I wrote it because I wanted to get  
rid of all the large jar files, and documentation etc, that had been  
put into source control. However, if _large files_ are deleted in the  
latest revision, then they can be hard to track down.

#!/bin/bash
#set -x

# Shows you the largest objects in your repo's pack file.
# Written for osx.
#
# @see http://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 ', '

More info on the blog post: http://stubbisms.wordpress.com/2009/07/10/git-script-to-show-largest-pack-objects-and-trim-your-waist-line/

Regards,
Antony Stubbs

Talk to me about Wicket, Spring, Maven consulting, small scale  
outsourcing to Australasia and India and Open Source development!

Check out the Spring Modules fork at http://wiki.github.com/astubbs/spring-modules 
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