git-large-objects

#!/bin/bash

set -e

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

LINES="${1:-10}"

# list all objects including their size, sort by size, take top 10
objects="$( git verify-pack -v .git/objects/pack/pack-*.idx \
          | grep -v chain                                   \
          | sort -k3nr                                      \
          | head -n "${LINES}"                              \
          )"

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")"

    output="${output}\n${size}k,${compressedSize},${other}"
done

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