DevOps Classroom Series – Git – 11/Dec/2019 – Direct DevOps from Quality Thought

Installing Git

Windows:
- Download software from here
- Chocolatey:
  - Install from here
  - Open the Powershell and execute choco install git
Linux:
- Ubuntu: sudo apt-get update && sudo apt-get install git -y
- Redhat: sudo yum install git -y
Mac:
- Install homebrew and xcode

Git Operations on Node (Local)

Lets create a git Repository
Create a folder and cd into it

mkdir learninggit
cd learninggit

Mark this folder into repository by executing git init
In Git we have 3 logical areas
- Working Tree
- Staging Area/Index Area
- Local Repo / git database
Local Repo Workflow
- Make changes in Working Tree
- Add the changes to Staging Area
- Save the changes from Staging Area to Local Repo.
Lets try this WF
- Create two file 1.txt and 2.txt
- Execute the command git status
- Now lets add the changes to staging area
```
git add 1.txt
git status
git add 2.txt
git status
```
- Now lets try to commit the change from staging Area to Local Repo. To do this we can use the command git commit.
- This command requires 3 details
  - Username
  - Email
  - Message
- Username and Email can be configured once at the system level, but message has to passed for every commit.
- To configure email and username
```
git config --global user.name "<yourusername>"
git config --global user.email "<youremailid>"
```
- To commit the changes now execute git commit -m "First Commit"
- To check the history, execute the following command git log
- For every change you get unique commit id as shown below
- Create a new folder called as docs
- Create one more folder called as test
- In the test folder create a new file called as 3.txt
- Now Execute git status and you will observed docs folder information is not shown in git status. Git never identifies empty directories.
- Now add the change to staging area git add test/
- Now execute the following commands and observe the ouptut info
```
git commit -m "Second Commit"
git status
git log
```