1. Go to github profile
2. Go to Profile settings

1. Then click on SSH and GPG keys

1. Open you mac terminal and Paste the text below, replacing the email used in the example with your GitHub email address

ssh-keygen -t ed25519 -C "your_email@example.com"

1. After Run the command it show

Put your laptop password

1. After that it generate SHA256

7.Start the ssh-agent in the background.

$ eval "$(ssh-agent -s)"
> Agent pid 59566

1. Run

open ~/.ssh/config  

If the file doesn't exist, create the file.

touch ~/.ssh/config

1. Open ~/.ssh/config file, then modify the file to contain the following lines. If your SSH key file has a different name or path than the example code, modify the filename or path to match your current setup.

Text

Host github.com
AddKeysToAgent yes
UseKeychain yes
IdentityFile ~/.ssh/id_ed25519 

1. Run

ssh-add --apple-use-keychain ~/.ssh/id_ed25519   

If it show error like

Then run

ssh-keygen -t ed25519 -C Your_github_emailr@gmail.com

Then run

1. Go to your git hub account and click on "New SSH key"

1. Provide title and key.

1. For "key" open .ssh > id_ed25519.pub

Now clone a project from your github repository

git clone git@github.com:KhairunNaharNowrin/End-to-End-Testing-With-Cypress.git  

1. Setup the project environment
2. Run

git add .  

git commit -m "set up environment"

It will show error like "Author identity unknown"

Run

git config --global user.email "you@example.com"

  git config --global user.name "Your Name"

to set your account's default identity.
Omit --global to set the identity only in this repository.

git push   

reference -

• https://docs.github.com/en/authentication/connecting-to-github-with-ssh/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent
• https://www.youtube.com/watch?v=45YCxPnBj-w