Installing git in your machine
yum install git ( for rpm based system)
or
apt-get install git ( for deb based system)
local repository
This is a git repository you are creating on your local machine
git init command will turn a normal directory into an empty git repository
git init
version check
[root@ip-172-31-43-215 ~]# git --version
git version 2.14.4
How to make a local repository
------> create your repo directory
mkdir git
cd git
----> make the folder into an empty local repo
git init
you can see the result
Initialized empty Git repository in /home/git/.git/
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---> Add or create your files in this local repo, here I am creating some text files in this directory
git add
This command will add all files into the staging area, whenever we commit, git will look for the files which are present in the staging area.
git add file_name ====> it will add the file into the staging area
To add whole files in this directory to the staging area
git add .
git commit
It will make effect all changes happend in the staging area to the local repo
Always leave a commit message while commiting, it will help us to detect what was changed.
git commit -m "my first commit"
git status
This command will shows the current status of git repository
git config
By this command, we can configure settings like username and email address
git config --global user.name "nithin"
git config user.email "xyz@gmail.com"
Branching
By default, git has a master branch, and if your developer wants to work on a new configuration and he can work on new git branch and once all completed, he can merge the current branch to the master branch
To list branches : git branch
To integrate 2 git branches together : git merge branch_name
Once we merge 2 branches, all contents from one branch to be merged to the other
To switching branches : git checkout branch_name ( To enter into a new branch)
To create branch : git branch branch_name
To delete a branch : git branch -d branch_name
To create a branch and checkout into the same in one command : git checkout -b branch_name
Remote repository commands
Anyone can create a git account in github and can create repos freely or private repos by paying a certain amount
git remote add origin git_URL
Git url can be obtained from clone or ssh options in git hub account
So by adding origin, we have connected our local repo to the remote repository
HOW TO CLONE A REMOTE REPOSITORY
git clone ssh_link_from_github
This will clone all the files and history of the remote repo in github to our local repo
pull command
If you want to reflect all changes that you made in your github remote repo to your local machine(local repo)
Use git pull command
git pull origin master
push command
git push origin master
It will clone all changes that we have done in our local repository to the remote repo.
git log
This will show the history of commit and changes of the repository
git revert
If you want to revert to any previous commit, use the git revert command.
"git log" command will show the commit id and
git revert commit-id
will revert to that commit.
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