In order to explore different commands in Git, you need to have a github account.

Follow the below link to create a new account in github.

https://help.github.com/articles/signing-up-for-a-new-github-account/

• Click on the new repository link and create a repo in Git.

• Click the Create Repository button.

• Once the repository is successfully created then the below page will be displayed.

• Create a folder in your machine where you want to start using the new repository.

• Follow the commands given below.

echo "# abc" >> README.md
git init
git add README.md
git commit -m "first commit"
git remote add origin https://github.com/dilipSundar/abc.git
git push -u origin master

• Congratulations , by completing the above steps you have successfully completed the pushing the code from your local to remote.

• Clone the repository
• Click on the clone or download button.
• Copy the link

git clone <copied-link>

• You have successfully cloned the repo. You can start working on that code.

git checkout -b <branch-Name>

• Modify the code/file.

• Run the below command to check the changed file.

git status

• There are three steps to push the code to github.

  • add
  • commit
  • push

• Follow the below commands.

git add .

git commit -m '<change comments> '

git push origin <branch-name>

git pull origin <branch-name>

• Merging someother branch changes in to your branch.

git merge <branch-name>

Follow this link for the steps that need to be followed.

https://help.github.com/articles/fork-a-repo/

For Example:

If we want to stop ignoring the .idea folder then add the below line in the .gitignore file .

.gitignore file:

.idea/

Folder :

If the folder is already a part of the git repo then run the below command to remove it from the git repo.

The below command will remove the folder from the git repo.

git rm -r --cached <folder>

For Example : To remove the .idea folder run the below command.

git rm -r --cached .idea/

File :

If the file is already a part of the git repo then run the below command to remove it from the git repo.

git rm --cached <file>

Folder:
This will delete the untracked folder.

git clean -fd

The below command will unstage the staged files.

git reset HEAD

fatal: refusing to merge unrelated histories

• To solve the above issue we need to run the below command

git pull origin <branchname> --allow-unrelated-histories