Re: [script] find largest pack objects

> 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 ', '