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Custom identity file (id_rsa.pub) with git client

Whenever you want to use a custom identity file with ssh, you usually use the -i parameter.

$ ssh -i ~/.ssh/other_id_rsa myuser@example.org

This will validate against ~/.ssh/otheridrsa.pub and not the default one at ~/.ssh/id_rsa.pub.

If you want to use this with the default git client, it won't work. You cannot specify the identity file when cloning/pulling from or pushing to a repository, yet.

So:

$ git remote add origin ssh://myuser@example.org:repository.git
$ git pull origin master

will fail, because it's using the default rsa key at ~/.ssh/id_rsa.

Instead you can use this workaround.

Adjust your ~/.ssh/config and add:

Host example
  Hostname example.com
  User myuser
  IdentityFile ~/.ssh/other_id_rsa

Now use the ssh host alias as your repository:

$ git remote add origin example:repository.git
$ pull origin master

And it should use the otheridrsa-key!

In linux, ssh by DracoBlue @ 20 Mar 2011

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