git-rewrite-commit-history.sh

gistfile1.sh

#!/bin/sh

if [[ $# -ne 4 ]] 
	then
	echo "Usage $0 <repository path> <Old Committer Email> <New Committer Name> <New Committer Email>"	# missing parameters
	exit 2
fi

cd $1

git filter-branch -f --env-filter '

OLD_EMAIL=$2
CORRECT_NAME=$3
CORRECT_EMAIL=$4

if [ "$GIT_COMMITTER_EMAIL" = "$OLD_EMAIL" ]
then
    export GIT_COMMITTER_NAME="$CORRECT_NAME"
    export GIT_COMMITTER_EMAIL="$CORRECT_EMAIL"
fi
if [ "$GIT_AUTHOR_EMAIL" = "$OLD_EMAIL" ]
then
    export GIT_AUTHOR_NAME="$CORRECT_NAME"
    export GIT_AUTHOR_EMAIL="$CORRECT_EMAIL"
fi
' --tag-name-filter cat -- --branches --tags