ssh

prerequisites

linuxwindows

make sure you've...

• installed git

  aptpacman

  apt install -y git
  

  pacman -S --noconfirm git
  

make sure you've...

• installed git

  winget install -eh --id Git.Git
  

creating an ssh key

ssh-keygen -t ed25519 -f $HOME/.ssh/id_ed25519 -C "$EMAIL" -N "$PASSPHRASE"
clip < ~/.ssh/id_ed25519.pub # (1)!

1. ssh pub key is in the clipboard

make sure you've...

• added the new ssh key to github
• if need be, authorized the ssh key with saml single sign-on

backing up an ssh key

note that...

• an ssh key backup will be made available in ~/Downloads

cd ~/.ssh
tar -czvf "$(date '+%F').ssh_key.tar.gz" id_ed25519 id_ed25519.pub
mv "$(date '+%F').ssh_key.tar.gz" ~/Downloads

make sure you've...

• backed up the ssh key backup somewhere safe (e.g. bitwarden)

importing an ssh key

make sure you've...

• copied an old ssh key backup to ~/Downloads

cd ~/Downloads
tar -xzvf $DATE.ssh_key.tar.gz # (1)!
mv id_ed25519 id_ed25519.pub ~/.ssh
chmod 600 ~/.ssh/id_ed25519
chmod 600 ~/.ssh/id_ed25519.pub
rm *ssh*.tar.gz

1. $DATE is the date of the ssh key backup to-be imported (e.g. 2025-01-01)

deleting an ssh key

rm ~/.ssh/id_ed25519 ~/.ssh/id_ed25519.pub

make sure you've...

• removed the old ssh key from github

resources

• SSH(1)
• Import private SSH key to new client machine