Git filesize history (shell script)

git-fs-history

#!/bin/sh

#
# list the given file's filesize next to each commit
# usage: git-fs-history path/to/file
#

if [ $# -ne 1 ]; then
        echo "Error: invalid number of arguments."
        exit 1
fi

# for all commits on this file
for commit in $(git log --format=%H $1); do
	# get raw filesize
        fs_raw=$(git cat-file -s $commit:$1)
        # convert to kilobytes
        fs=$(echo "scale=1; $fs_raw/1024" | bc)k
        # grab the commit msg
        msg=$(git log -1 --format=%s $commit)
        # print
        echo $fs $msg
done