Git

Change Git user for a repository

git config user.name "anilbhradia"
git config user.email "anil.bharadia@gmail.com"

Use Github token

Open nano .git/config

Replace the following line

[remote "origin"]
        url = https://github.com/anilbharadia/anilbharadia.github.io.git

With

[remote "origin"]
        url = https://xxx@github.com/anilbharadia/anilbharadia.github.io.git

Where xxx is the token

Use atom as a git editor

git config --global core.editor "atom --wait"

Change user of a commit

Ref: https://stackoverflow.com/a/3042512

git rebase -i HEAD~1

This opens editor (atom) with content like:

pick 012a345 update instructions for local env setup in README.md

# ...

Change pick to edit, save, and close the editor.

git commit --amend --author="Author Name <email@address.com>"

It will open the editor again to set the commit message. Update the message, save, and close atom.

git rebase --continue

git push -f

done.

Delete last commit

    git reset --hard HEAD~1 # remove commit and all changes
    git reset --soft HEAD~1 # remove commit but keep all changes