Hello Friends,
You may check here all the commands for setup the GitHub ssh key.
I am using here Linux environment you may find detail instructions on given link:
Testing ssh connection
> Hi username! You've successfully authenticated, but GitHub does not provide shell access.
"Hurray, you have successfully connected ssh key"
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If you are getting any errors like
1. permission denied (publickey)
2. Bad configuration
3. Key unauthorized
Some helpful command:
$ eval "$(ssh-agent -s)"
$ ssh-add ~/.ssh/id_ed25519