Commit:

git add FILE
git commit -m 'DESCRIPTION'

Tag:

git tag TAGNAME commit-hash

Create New Branch:

git branch XXX

Switch Branch:

git checkout XXX

Delete uncommitted changes:

git reset --hard

Push To Server

:!: DO NOT EDIT ON SERVER :!:

1 - Create repo on server, tweak settings

$ ssh server
$ cd X
$ git init .
$ git config receive.denyCurrentBranch ignore
$ vim .git/hooks/post-receive

#!/bin/sh

# Update the working tree after changes have been pushed here
cd ..
env -i git reset --hard

$ chmod +x .git/hooks/post-receive

2 - Create remote on server

$ git remote add live ssh://user@example.com/home/example/public_html

3 - Push to server

$ git push live origin

Sources:

Client, Client, Server Trickery

For adding remotes, etc – Don't forget to point out the protocol, i.e.

ssh://git@li345-114.members.linode.com/var/git/XXX

Client A	Client B	Server	Comment
		adduser –home /var/git git
		chown git:git /var/git
		su - git
		cd /var/git
		mkdir proj
		git init –bare .	Init bare repository
cd /proj
git init .
touch README
git add README
git commit -m 'first'
git remote add origin git@server/var/git/proj			Adds origin remote
git push origin master			Push master to origin
	git clone git@server:/var/git/proj		Clone origin

NB: git pull does git fetch, then git merge