- Published on
Generate SSH Key
- Authors
- Name
- Duc Dao
- @_ducdh
Generate SSH Key
Checking for existing SSH keys
Open terminal, navigate to home folder (default when open terminal).
Enter below command to see if any SSH keys exist:
ls -al .ssh
The result will show a list contain id_rsa, id_rsa.pub, known_hosts if exist any SSH keys.
Generating a new SSH keys
Create a new SSH keys:
ssh-keygen -t rsa -b 4096 -C "your_email@example.com
Full options: ssh-keygen -t rsa -b 4096 -C "your_email@example.com"
Enter for default options.
Show SSH agent pid:
eval "$(ssh-agent -s)"
# Agent pid 59566
Add SSH key to the ssh-agent:
ssh-add ~/.ssh/id_rsa
Security
Should keep the private key not too open:
chmod 400 ~/.ssh/id_rsa
Copy SSH
If you using xclip, you could used copy SSH key quick as below:
xclip -sel clip < ~/.ssh/id_rsa.pub
Add SSH key to remote
Usually, you can add your SSH key in the Account > Setting section > SSH or Development keys.
ssh-copy-id -i ~/.ssh/id_rsa.pub remote-host
To remove the remote-host from known-host:
ssh-keygen -f "~/.ssh/known_hosts" -R remote-host
Verify SSH connection
Assume your remote git repo store on Github, this below will help you to check SSH connect to the remote.
ssh-add -L
ssh -T git@github.com
A message will show the result of connect process.
See more and details: https://help.github.com/articles/generating-an-ssh-key/