GIT Commands reference for DevOps Engineer

By Anonymous -
Dear DevOps Engineer!! this post is full of experimenting with git commands running most of them on the 'Git Bash' window in my laptop. I've collected three things about each git command.
  • git command syntax
  • What this git command will do - short descriptions
  • An example command that I've executed
  • Screenshot of that command execution

How do I Start a Fresh repository in Git CLI(local repo)?

You need to create a folder where you would like to start your coding project. The code can be web-site related where you can have multiple directories involved such as HTML files into a folder, all images to be used in the website in a folder, CSS files into a folder, etc. First, make the folder structure for you project then at the root of the project need to initialize the project.  To create empty repo or re-initializing a repo

Syntax :
git init
Note: It is always better to have a fresh directory created and then run the above command to initialize a local Git repository.

git init example



Getting a remote repository to your git client - Local system/Laptop

You can have the remote repository either public or private teams on the following SCM clouds:
  1. GitHub 
  2. GitLab
  3. BitBucket

git clone Syntax:

git clone ssh://git@github.com/[username]/[repository-name].git

Create a local copy of a remote repository of GitHub or Gitlab. Make sure that you're doing first time in that folder, it should not have the same repo that means if your re-run the same command it cannot work.




Please make sure you have the correct access rights and the remote repository exists

Example of using gitlab URL:
 git clone https://github.com/BhavaniShekhar/vtdevops2021feb.git
Vybhava : git clone 


Syntax:
git commit -m "[commit message]"
commit changes
Example: 
git commit -m "some message"
git commit command

Syntax: 
git checkout -b [branch name origin/[branch name]

Clone a remote branch and switch to it
Example: 
git checkout -b feature2
Differences between git checkout & switch command

Syntax: 
git checkout [branch name]

Switch to a branch
Example: 
git checkout
git checkout command
Syntax : 
git checkout -

Switch to the branch last checked out
Example : 
git checkout -
git last checkout command
Syntax: 
git checkout -- [file-name.txt]

Discard changes to a file on which you are worked recently.
Example:


Syntax:


git push origin [branch name]



push to a branch to your remote repository

 Example: 



git push origin slave






git push command



Syntax: 


git push -u origin [branch name]



push changes to remote repository (and remember the branch)

Example: 



git push -u origin feature1






git push origin command



Syntax: 


git push



push changes to remote repository (remembered branch)

Example: 



git push






git push command 



Syntax: 


git push origin --delete [branch name]



delete a remote branch

 Example: 



git push origin --delete feature3






git remote branch delete oush command





git pull command

Syntax:


git pull origin [branch name]



update local repository to the newest commit

Example: 



git pull






git pull command






pull changes from remote repository

Example: 



git pull origin newbranch2




git remote
 
Syntax: 


git remote add origin ssh://git@github.com/[username]/[repository-name].git
    or
 git remote set-url origin ssh://git@github.com/[username]/[repository-name].git



add a remote repository

Example 1: 



git remote add origin git@gitlab.com:gitops4/docker-exercises.git




set a repository's origin branch to ssh
Example 2:



git remote set-url origin git@gitlab.com:gitops4/docker-exercises.git




git log
 
The syntax for the git log command is:


git log [--summary] [--oneline]





view changes



Example:


git log








git log command




view changes made to files or directory in (detailed)

Example: 



    git log --summary

    




git log summary command





view changes(briefly)

Example: 



    git log --oneline

    




git log oneline command




Syntax: 


git diff [source branch] [target branch]



preview changes before merging 

References: 
 Git log command examples https://www.thegeekstuff.com/2014/04/git-log/
















































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