I really like to mess up with my system, but I don’t panick when I do something wrong or end up breaking things. Fixing is fun. Sweating is fun.
Well, a few days ago, I was setting up SSH Server, which I successfully did. I’m not a master of SSH, so I was exploring the commands in order to learn things.
If I remember correctly, for no reason, I typed this command –
$ ssh firstname.lastname@example.org
So yeah, I did. I don’t know why, but if you know what happens when you type this command, you’ll understand how silly it was. No regrets though.
Here is a rough and made up output –
The authenticity of host 'github.com (188.8.131.52)' can't be established. ECDSA key fingerprint is SHA256:17INYs158/wFWvsIroDAm5YM. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added 'github.com' (ECDSA) to the list of known hosts.
rishi is not even my Github username!
Anyway, I forgot what I did and started exploring the SSH. I must say, it’s fun, and sometime very complicated, especially when you want to dive in it.
After a few hours, when I was done playing with it, I had to push some code to one of my old repository. Nothing fancy!
$ gith push -u origin master
This gave me an error, which was –
Permission denied (publickey). fatal: Could not read from remote repository. Please make sure you have the correct access rights and the repository exists.
It shouldn’t have happened. I got a little confused because a few hours ago everything was working fine, and then I realised what I’ve done. Just another silly mistake, but I knew how to quick fix it, so I just did –
Trying to be extra smart (Skip this part) –
$ git config --global user.name CodeDotJS
$ git config --global user.email email@example.com
$ ssh-keygen -t rsa -b 4096 -C "firstname.lastname@example.org"
$ eval "$(ssh-agent -s)"
$ ssh-add ~/.ssh/id_rsa
$ xclip -sel clip < ~/.ssh/id_rsa.pub
Added the new keys here and I was all set to push the futher commits.
So, what happened?
- Github wasn’t able to authenticate me.
- My ssh keys were replaced with the useless ones.
- Why so late SSHing?
- I never learned SSH because I never felt its need. In the past, I’ve never even used. it, but I do know what it does. Anyway, due to remote works, I learned it. It was important and it’s definitely useful now.
- Do I regret not learning it in past?
- No. I don’t
I hope this helps. Thank you!