Git 101

git add - Add file contents to the index.
git branch - List, create, or delete branches
git bisect - Find by binary search the change that introduced a bug
git checkout - Checkout a branch or paths to the working tree
git clone - Clone a repository into a new directory
git commit - save staged changes to local repository
git diff - Show changes between commits, commit and working tree, etc
git fetch - download objects and refs from another repository
git grep - Print lines matching a pattern
git init - reate an empty Git repository or reinitialize an existing one
git log - show commit logs
git merge - Join two or more development histories together
git mv - Move or rename a file, a directory, or a symlink
git pull - Fetch from and merge with another repository or a local branch
git push - Update remote refs along with associated objects
git rebase - Rebasing is the rewinding of existing commits on a branch with the intent of moving the branch start point forward, then replaying the rewound commits.
git reset - Reset current HEAD to the specified state
git rm - Remove files from the working tree and from the index
git show - Show various types of objects
git status - Show the working tree status
git tag - create tagging.

git help xxx - to show help info