[Short Tip] Copy SSH-Identity

If you regularly shh to a specific server, it is handy to copy the public part of your ssh key to the other server to avoid putting in the login password all the time. But instead of manually picking your public key, invoking scp manually to throw it to the server and calling echo/cat to attach it to

~/.ssh/authorized_keys

you can use one handy little command:

# ssh-copy-id liquidat@mymachine.de
liquidat@mymachine.de's password:
Now try logging into the machine, with "ssh 'liquidat@mymachine.de'", and check in:

~/.ssh/authorized_keys

to make sure we haven't added extra keys that you weren't expecting.

If you need to use a different port the command is a bit different than you might expect:

# ssh-copy-id "liquidat@mymachine.de  -p 1234"