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

$ssh-copy-id user@host
To generate the keys use the command ssh-keygen

273
By: senthil
2009-02-07 04:58:11

13 Alternatives + Submit Alt

What Others Think

If you need change default port ssh, you can use: ssh-copy-id 'user@host -p2233'
irraz · 704 weeks ago
I think this isn't normally found outside Ubuntu or Debian systems.
mlambie · 703 weeks and 2 days ago
Alternativly you can use ?cat ~/.ssh/*.pub | ssh user@remote-system 'umask 077; cat >>.ssh/authorized_keys'? on such systems.
DASKAjA · 703 weeks and 2 days ago
... without the question marks (?) of course.
DASKAjA · 703 weeks and 2 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 · 702 weeks and 6 days ago
Works on RedHat-like systems
jmcoursi · 702 weeks and 6 days ago
Also works on Gentoo, it's contained in openssh package.
xupeng · 701 weeks and 4 days ago
doesn't work across all unix OS. Or is there some installation needed?
rommelsharma · 700 weeks and 5 days ago
cat ~/.ssh/id_dsa.pub | ssh user@remotehost 'cat >> ~/.ssh/authorized_keys
juddmaltin · 698 weeks and 2 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 · 697 weeks and 2 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 · 691 weeks and 2 days ago
vleolml, ssh-copy-id does exist on both Ubuntu 8.x and CentOS 5.x.
bassu · 684 weeks and 4 days 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 · 618 weeks and 5 days ago
For OSX using Homebrew: there is a Formula for this: http://mxcl.github.com/homebrew/
unixmonkey24450 · 573 weeks and 6 days ago
thanks man this will help me :)
techie · 487 weeks and 2 days ago
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seofox · 26 weeks and 1 day ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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