Rename master branch to trunk for all git repos in a directory.

README.md

Trunkify

Tl;DR

1. Run trunkify.sh <GH_username> to rename the master branch of all repos in a directory.
2. You need to update the default branch for each repo on GitHub (follow urls printed out).

More instructions

First download the .trunkify.sh script and place it in a folder that has git repo(s) in it (e.g. your projects/ folder, NOT in a Git repo itself).

Run from bash with ./trunkify.sh <GH_username>. Username is optional, but will give you links to update your GitHub default branch. The script will rename the master branch in each git repo it encounters to trunk. No pull requests, no messing with Git history.

Renames master to trunk by default, but you can specify an optional second parameter to rename master to something else (ex. ./trunkify.sh <GH_username> main). Other good names are main, latest, default, etc.

All credit to Scott Hanselman, see his blog post here for why I used git branch -m and further instructions on how to tell others to update their local repositories.

This comes with no warranties! Use at own risk.

trunkify.sh

#!/bin/bash
github_user=${1:-<USERNAME>}
branch_name=${2:-trunk}
GREEN="\033[1;32m"
NOCOLOR="\033[0m"
echo -e "Don't forget to update your default branch on GitHub for the ${GREEN}following repos${NOCOLOR}:"
for d in $(find . -maxdepth 1 -type d); do
    if [ -d "$d/.git" ]; then
        cd $d
        repo=$(basename "$PWD")
        git branch -m master $branch_name
        git push -u origin $branch_name
        echo -e $GREEN
        echo "https://github.com/$github_user/$repo/settings/branches"
        echo -e $NOCOLOR
        cd ..
    fi
done