Git
======

``Git`` is a version-control system for tracking changes in computer files and you can store and share your codes on the `github <https://github.com/>`_ .

Install git
------------

1. Download the git

.. code :: shell

    wget https://github.com/git/git/archive/v2.19.1.tar.gz

2. Compile and install it 

.. code :: shell

   tar -xvf v2.19.1.tar.gz
   cd git-2.19.1
   make configure
   ./configure --prefix=$HOME/software/git-2.19.1
   make all doc
   make install

.. error :: 
    
    lack of asciidoc
    
    .. code :: shell
    
        wget https://github.com/asciidoc/asciidoc/archive/8.6.10.tar.gz
    

Commond of git
---------------

- Initialize repository

.. code :: shell
    
    git init # initialize
    git add # add a file
    git commit -m "xxx" # commit
    git rm # delete

- Version control

.. code :: shell

    git status # check whether have modified
    git diff # difference between working directory and repository
    git diff -HEAD -- <file> 
    git log --pretty=oneline # commit log
    git reflog # future
    git reset --hard HEAD^ # a->b->c  a->b HEAD^^ HEAD~100
    git reset --hard <commit_id> # a->b a->b->c
    git revert <commit_id>
    git checkout -- <file> # throw modification in working directory 
    git reset  HEAD <file> # throw modification in stage

- Add remote repository

.. code :: shell
    
    git remote add origin git@server-name:path/repo-name.git 
    git push -u origin master
    git clone

-  Branch management

.. code :: shell 
  
    git checkout -b dev # create a new branch and switch to it 
    git branch 
    git branch -d <branch_name>
    git merge <branch_name>