A small working dirty script for use a git branch for a static site in Github pages, generated locally by a Jekyll server in an another git branch. Look at http://traz.github.io/posts/Jekyll-github/

transfert.sh

#!/bin/bash  


echo "------- Transfer statics pages to Github (make sure jekyll build ok, and git branch dev commited) ---"

current_branch=$(git branch | grep '*' | cut -c 3-)
echo -e "-- \033[1;33mGit\033[0m    : Current branch :\033[0;31m $current_branch\033[0m"

if [ $current_branch != "dev" ]; then
  echo -e "-- \033[0;31mERROR : Branch must be dev \033[0m"
  echo "------- Finished"
  exit 0;
fi

echo -e "-- \033[0;32mJekyll\033[0m : Build"
jekyll build

echo -e "-- \033[0;33mGit\033[0m    : add ."
git add .

echo -e "-- \033[0;34mUSER\033[0m   : enter the commit message for dev branch : "
read dev_commit_message

echo -e "-- \033[0;33mGit\033[0m    : commit dev "
git commit -m "$dev_commit_message"


master_commit_id=$(cat .git/refs/heads/master)
echo -e "-- \033[0;33mGit\033[0m    : get the last COMMIT_ID of master branch :\033[0;31m ${master_commit_id:0:7}\033[0m"



commit_tree_id=$(git commit-tree dev^{tree}:_site -p $master_commit_id -m '$dev_commit_message')
echo -e "-- \033[0;33mGit\033[0m    : commit-tree _site, id :\033[0;31m ${commit_tree_id:0:7} \033[0m"

new_master_commit_id=$(git update-ref refs/heads/master $commit_tree_id)
echo -e "-- \033[0;33mGit\033[0m    : update-ref, new master id  : \033[0;31m ${new_master_commit_id:0:7} \033[0m"


echo -e "-- \033[0;33mGit\033[0m    : checkout master"
git checkout master

echo -e "-- \033[0;33mGit\033[0m    : push origin master to github"
git push origin master 

echo -e "-- \033[0;33mGit\033[0m    : checkout dev"
git checkout dev 

echo "------- Finished "