ghdefaultbranch.sh

#!/bin/sh

# Copyright 2021 Jonathan Bowman. All documentation and code contained
# in this file may be freely shared in compliance with the
# Apache License, Version 2.0 (http://www.apache.org/licenses/LICENSE-2.0)
# and is **provided "AS IS" without warranties or conditions of any kind**.
#
# OUT="$(mktemp)"; wget -q -O - https://gist.github.com/bowmanjd/d72e2e89996087f71ffe3e9777dea5a2/raw > $OUT; . $OUT
#
# You may read a brief synopsis at
# https://dev.to/bowmanjd/get-github-default-branch-from-the-command-line-powershell-or-bash-zsh-37m9

defbranch () {
  REPO=$1
  wget -q -O - "https://api.github.com/repos/$REPO" | sed -nE 's/^\s+"default_branch": "([^"]+).+$/\1/p'
}