git command line tips and tricks

git.tnt

#!/bin/sh
# Blame: arunsmtp@gmail.com
# My version of github change git author script 
# https://help.github.com/articles/changing-author-info/

if [ $# -eq 0 ]; then
    echo "Usage: OLD_EMAIL CORRECT_NAME CORRECT_EMAIL"
    echo "...and run from the toplevel."
    exit 1
fi

git filter-branch --env-filter '

OLD_EMAIL="$1"
CORRECT_NAME="$2"
CORRECT_EMAIL="$3"

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