Update git commit names and emails

git-filter-branch.sh

# 
# More information @ http://schacon.github.io/git/git-filter-branch.html
#

# Rewrite using environment filter
git filter-branch --env-filter \
    'if [ $GIT_COMMITTER_EMAIL = old@email.com ];
    then
        GIT_COMMITTER_NAME="New Name"; 
        GIT_COMMITTER_EMAIL=new@email.com;
        GIT_AUTHOR_NAME="New Name";
        GIT_AUTHOR_EMAIL=new@email.com;
    fi; 
    export GIT_COMMITTER_NAME; 
    export GIT_COMMITTER_EMAIL; 
    export GIT_AUTHOR_NAME; 
    export GIT_AUTHOR_EMAIL;' \
    -f

# Rewrite using commit filter
git filter-branch --commit-filter \
    'if [ "$GIT_COMMITTER_EMAIL" = "old@email.com" ];
    then
        export GIT_AUTHOR_NAME="New Name"; 
        export GIT_AUTHOR_EMAIL=new@email.com;
        export GIT_COMMITTER_NAME="New Name";
        export GIT_COMMITTER_EMAIL=new@email.com;
    fi;
    git commit-tree "$@"'

# Only rewrite the name
git filter-branch --commit-filter \
    'if [ "$GIT_COMMITTER_NAME" = "Old Name" ];
    then
        export GIT_AUTHOR_NAME="New Name";
        export GIT_COMMITTER_NAME="New Name";
    fi;
    git commit-tree "$@"'

# Only rewrite the email
git filter-branch --commit-filter \
    'if [ "$GIT_COMMITTER_EMAIL" = "old@email.com" ];
    then
        export GIT_AUTHOR_EMAIL=new@email.com;
        export GIT_COMMITTER_EMAIL=new@email.com;
    fi;
    git commit-tree "$@"'