Function to rebase all branches from reference one,

rebase-develop.sh

#!/bin/sh

# rebase() - Rebase all branches from the specified source branch
#
# Usage:
#   rebase <source-branch>
#
# Description:
#   This function will check if git is on the PATH, and if the argument "$1" 
#   has been provided. If not, an error message will be printed and the
#   function will exit with an error code. If the argument is present, the
#   function will loop through each branch and rebase it with the specified 
#   source branch. After that, the function will then checkout to the 
#   provided branch source.
function rebase() {
  if [ -z "$(command -v git)" ]; then echo "Error: git is not on the PATH" && exit 1; fi
  if [ $# -ne 1 ]; then echo "Error: No branch specified" && exit 1; fi

  git for-each-ref --format="%(refname)" refs/heads/ | while read branch; do
    git checkout $branch
    git rebase $1
  done

  git checkout $1
}