From http://concord-consortium.github.io/developer-notes/automating-gh-pages-integration.html:
How to setup a git repo so gh-pages automatically tracks commits to master and ‘git push origin’ updates the remote master and gh-pages branches.
Setup a test repo:
mkdir pages-test
cd pages-test/
git init .
echo 'readme' > readme
git add readme
git commit -m 'add readme' readme
git branch gh-pages master
Now there are two identical branches: master and gh-pages. Make a commit to master.
echo 'readme changed' > readme
git add readme
git commit -m 'change readme' readme
Now master is ahead by one commit:
$ git diff gh-pages --stat
readme | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
You can force update gh-pages to master like this to make them identical:
git branch -f gh-pages master
Now add a post-commit hook that does this and make it executable:
echo '#!/bin/sh
git branch -f gh-pages master' > .git/hooks/post-commit
chmod u+x .git/hooks/post-commit
and commit another change on master:
echo 'another change to readme' > readme
git add readme
git commit -m 'another change' readme
The two branches should now be identical.
I’ve setup my local energy2d-js repo this way and added two push elements to the origin remote in .git/config:
[remote "origin"]
url = git@github.com:concord-consortium/energy2d-js.git
fetch = +refs/heads/*:refs/remotes/origin/*
push = refs/heads/master:refs/heads/master
push = refs/heads/gh-pages:refs/heads/gh-pages
This means anytime I execute: ‘git push origin’ I’ll push both master and gh-pages to their respective branches.
$ git commit -m 'revert text change, testing hooks' model2d-demo.html
[master 852fdfb] revert text change, testing hooks
1 files changed, 1 insertions(+), 1 deletions(-)
[energy2d-js-git ruby-1.9.2-p180 (master)]$ git push origin
Counting objects: 5, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (3/3), done.
Writing objects: 100% (3/3), 314 bytes, done.
Total 3 (delta 2), reused 0 (delta 0)
To git@github.com:concord-consortium/energy2d-js.git
340c2c1..852fdfb gh-pages -> gh-pages
c741225..852fdfb master -> master