SSH Key

Generating a new SSH key

Generating a new SSH Key with no passphrase.

ssh-keygen -t rsa -b 4096 -f ~/.ssh/example_id_rsa -C email@example.com -N ''
  

Ensure the ssh-agent is running.

eval "$(ssh-agent -s)"
  

Add your SSH private key to the ssh-agent.

ssh-add ~/.ssh/example_id_rsa

Copies the contents of the id_rsa.pub file to your clipboard.

# MacOS
pbcopy < ~/.ssh/example_id_rsa.pub

# Window
clip < ~/.ssh/example_id_rsa.pub

# Linux
cat ~/.ssh/example_id_rsa.pub
  

If you need to connect to the same host with different keys then you can achieve it by:

$ vim ~/.ssh/config
Host example.github.com
  HostName github.com
  User git
  IdentityFile ~/.ssh/example_id_rsa
  IdentitiesOnly yes
  

Example of git clone using multiple ssh keys.

git clone git@example.github.com:username/repo.git

On Linux and macOS, verify that the permissions on your IdentityFile are 400.

chmod 400 ~/.ssh/example_id_rsa

If the config file is new, don't forget to do.

chmod 600 ~/.ssh/config