git.sh

# create local branch (shorthand)
git checkout -b <branch_name>

# create local branch
git branch <branch_name>
git checkout <branch_name>

# and then start hacking and commit

# push branch to remote
git push -u origin <branch_name>

# merge branch to master
git checkout master
git merge <branch_name>
git push -u origin master

# delete local branch
git branch -d <branch_name>

# delete remote branch
git push origin --delete <branch_name>

# print for timesheet
# http://stackoverflow.com/a/1441062/2259286
git log --pretty=format:"%h%x09%an%x09%ad%x09%s"

# Delete commits from a local and remote. 
# https://stackoverflow.com/a/1338744
git reset --hard HEAD~1 
OR
git reset --hard <sha1-commit-id>

AND THEN
git push origin HEAD --force

# ...
git config user.name zhaocnus
git config user.email zhaocnus@gmail.com