how to copy ssh key in ubuntu code example

Example 1: how to copy contents of ssh key into clipboard

pbcopy < ~/.ssh/id_rsa.pub

Example 2: copy ssh key mac

cat ~/.ssh/id_rsa.pub | pbcopy

Example 3: copy ssh keys

pbcopy < ~/.ssh/id_rsa.pub

Example 4: how to copy ssh key

ssh-copy-id -i ~/.ssh/mykey user@host