Copy ssh keys to user@host to enable password-less ssh logins.

• Copy your SSH public key on a remote machine for passwordless login - the easy way

  This is sample output - yours may be different.

  
  

  86
  ssh-copy-id username@hostname
  flart · 2009-02-16 12:11:26 2
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• Copy your ssh public key to a server from a machine that doesn't have ssh-copy-id

  If you use Mac OS X or some other *nix variant that doesn't come with ssh-copy-id, this one-liner will allow you to add your public key to a remote machine so you can subsequently ssh to that machine without a password.

  This is sample output - yours may be different.

  
  

  70
  cat ~/.ssh/id_rsa.pub | ssh user@machine "mkdir ~/.ssh; cat >> ~/.ssh/authorized_keys"
  DEinspanjer · 2009-02-05 19:37:56 18
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• Copy ssh keys to user@host to enable password-less ssh logins.

  Same as original just no $ at start

  This is sample output - yours may be different.

  
  

  5
  ssh-copy-id user@host
  matthewbauer · 2009-08-07 16:36:19 1
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• Copy ssh keys to user@host to enable password-less ssh logins.

  Alternative for machines without ssh-copy-id

  This is sample output - yours may be different.

  
  

  2
  cat ~/.ssh/id_rsa.pub | ssh user@host 'cat >> ~/.ssh/authorized_keys'
  eneko · 2012-12-08 17:00:47 0
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• copy public key

  If the username on the remote host is the same as on the local machine you can omit the username.

  This is sample output - yours may be different.

  
  

  0
  ssh-copy-id host
  unixmonkey38088 · 2012-07-24 08:43:41 0
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If you need change default port ssh, you can use: ssh-copy-id 'user@host -p2233'

irraz · 890 weeks and 4 days ago

I think this isn't normally found outside Ubuntu or Debian systems.

mlambie · 889 weeks and 6 days ago

Alternativly you can use ?cat ~/.ssh/*.pub | ssh user@remote-system 'umask 077; cat >>.ssh/authorized_keys'? on such systems.

DASKAjA · 889 weeks and 6 days ago

... without the question marks (?) of course.

DASKAjA · 889 weeks and 6 days ago

Beware : without arguments it copies your identity.pub file, which is by default a RSA1 pub key (obsolete), unless you have already executed ssh-agent, added your keys, so that ssh-add -L returns something.

jmcoursi · 889 weeks and 3 days ago

Works on RedHat-like systems

jmcoursi · 889 weeks and 3 days ago

Also works on Gentoo, it's contained in openssh package.

xupeng · 888 weeks and 1 day ago

doesn't work across all unix OS. Or is there some installation needed?

rommelsharma · 887 weeks and 2 days ago

cat ~/.ssh/id_dsa.pub | ssh user@remotehost 'cat >> ~/.ssh/authorized_keys

juddmaltin · 884 weeks and 6 days ago

ssh-copy-id is just a script. If you don't have it you can google it easily ehough. Using the above cat is easier though. OS X doesn't bundle ssh-copy-id so I always use the cat version.

qubyte · 883 weeks and 5 days ago

This does not work on CentOS 5.3: ssh-add -L The agent has no identities. So, this tip requires at least some readme on setting up said ssh-copy-id Quick reading of man ssh-agent did not result in much enlightenment for me. On the other hand the cat ~/.ssh/*.pub | ssh user@remote-system 'umask 077; cat >>.ssh/authorized_keys' is easy to understand and certainly works....

vleolml · 877 weeks and 5 days ago

vleolml, ssh-copy-id does exist on both Ubuntu 8.x and CentOS 5.x.

bassu · 871 weeks ago

As always, read the man page carefully before using this command. It does a bit more than just copying your public key. It also modifies the permissions of ~ and ~/.ssh, which may not be what you want if for example the recipient of your key is user postgres on the remote box.

lorenzocabrini · 805 weeks and 1 day ago

thanks man this will help me :)

techie · 673 weeks and 6 days ago

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