bash script to replace committer email and name in all history

fix-git-email

#!/bin/bash
if [[ -z $3 ]]; then
  echo "Usage: $(basename $BASH_SOURCE) bad-email good-email good-name"
  exit 1
fi
export BAD_EMAIL=$1
export GOOD_EMAIL=$2
export GOOD_NAME=$3
git filter-branch --env-filter '
  if [[ $GIT_AUTHOR_EMAIL = $BAD_EMAIL ]]; then
    GIT_AUTHOR_EMAIL=$GOOD_EMAIL
    export GIT_AUTHOR_EMAIL
    GIT_AUTHOR_NAME=$GOOD_NAME
    export GIT_AUTHOR_NAME
  fi
  if [[ $GIT_COMMITTER_EMAIL = $BAD_EMAIL ]]; then
    GIT_COMMITTER_EMAIL=$GOOD_EMAIL
    export GIT_COMMITTER_EMAIL
    GIT_COMMITTER_NAME=$GOOD_NAME
    export GIT_COMMITTER_NAME
  fi
' -- --all