1. change_identity

Changes identity in git commits creating new history.

In shell script set your old email, correct username and correct email.

To push new commit history run: git push --force-with-lease --tags origin 'refs/heads/*'

Based on - https://stackoverflow.com/a/30737248/19638034

2. remove_ds_store

Fixes MacOS DS store files in repo.

Run script and add **/.DS_Store in .gitignore.

Commit and push changes.

Based on - https://stackoverflow.com/a/38797342/19638034

3. pretty_log

Shows beautiful commit tree

Based on - https://git-scm.com/docs/pretty-formats