Git Tricks

git-remove-large-files-from-history.sh

# Remove files from your specified path.

git filter-branch --force --index-filter 'git rm --cached -r --ignore-unmatch dir/with/large/files/*' --prune-empty --tag-name-filter cat -- --all
rm -rf .git/refs/original/ && git reflog expire --expire=now --all && git gc --prune=now && git gc --aggressive --prune=now

identify-large-files-in-git.sh

#!/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
#
# @see https://gist.github.com/nk9/b150542ef72abc7974cb
# @see https://stackoverflow.com/questions/10622179/how-to-find-identify-large-files-commits-in-git-history
# @see https://stackoverflow.com/questions/2100907/how-to-remove-delete-a-large-file-from-commit-history-in-git-repository

# 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"
allObjects=`git rev-list --all --objects`
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 $y | cut -f 1 -d ' '`
    # find the objects location in the repository tree
    other=`echo "${allObjects}" | grep $sha`
    #lineBreak=`echo -e "\n"`
    output="${output}\n${size},${compressedSize},${other}"
done

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