Change branch from `master` to `main`

change-branches-github.sh

# if you are using GitHub, you can use this tool to change all repos at once
# https://github.com/mheap/github-default-branch

# Rename dev to develop
github-default-branch --pat <token> --repo user/repo --old dev --new develop

# Rename all repos owned by an org
github-default-branch --pat <token> --org my-org-name

# Rename all repos owned by a user
github-default-branch --pat <token> --user my-user-name

change-default-branch-for-git-init.sh

# create a template file for git
# replace `main` with your new default branch name
echo "ref: refs/heads/main" > ~/.config/git/template/HEAD

# update your git config
# Note: if you already have specified an [init] section, open ~/.gitconfig and add this yourself:
# ~~~
# [init]
#   templateDir = ~/.config/git/template"
# ~~~
echo "[init]\n\ttemplateDir = ~/.config/git/template" >> ~/.gitconfig

# test `git init`
# should create a main branch and output: "Reinitialized existing Git repository in {path}/.git/"
git init

rename-master-to-main.sh

# rename `master` branch to `main`
git branch -m master main

# push to origin
git push origin -u main