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Create ed25519 Key
ssh-keygen -t ed25519 -C "comment or email <email@example.com>""
diff over ssh
diff foo <(ssh server 'cat foo') diff <(ssh server1 'cat foo') <(ssh server2 'cat foo')
poor mans ssh tunnel
<local port> <target> <remote port> <bastion> ssh -L 8000:example.com:443 mybastionhost.com
Manually Create authorized_keys
I don't usually have password auth enabled which breaks ssh-copy-id so I need to manually create keys if I'm doing some testing.
mkdir .ssh chmod 700 .ssh touch .ssh/authorized_keys chmod 400 .ssh/authorized_keys chown -R user:user .ssh