13

I've somehow lost my id_rsa.pub file. I still have my id_rsa file. How do I recover the public key from the private key?

(This question came up after ssh-copy-id was reporting "ERROR: No identities found" while ssh-keygen reported "/root/.ssh/id_rsa already exists". ls ~/.ssh pointed out the problem was having id_rsa but not id_rsa.pub. I found the solution, but it was buried at the bottom of a long post on an Ubuntu support forum.)

Improve this question
1
  • You can't just make another. OK I may be wrong Commented Sep 28, 2012 at 11:11

1 Answer 1

Reset to default
20

You can generate the public key using ssh-keygen -y. If your private key is in the default location, you can use the following to put the public key in the same place:

ssh-keygen -y -f ~/.ssh/id_rsa > ~/.ssh/id_rsa.pub
Improve this answer

You must log in to answer this question.

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.