ssh command

ssh is a Unix command used for remotely connecting to other servers using SSH protocol. ssh is sometimes called the ssh client component, while sshd is the server component of SSH software.

The simplest use is to invoke ssh command with a single parameter which is a remote server’s hostname or IP address:

{% highlight command %} greys@maverick:~ $ ssh vps1.unixtutorial.org Last login: Fri Oct 5 11:59:37 2018 from 212.129.78.186 greys@vps1:~$ {% endhighlight %}

Default port for SSH service is 22, but it’s possible to change it so you may have to specify it as an option for the ssh command:

{% highlight command %} greys@maverick:~ $ ssh -p 212 s3 Last login: Thu Oct 4 13:41:11 2018 from 212.129.78.20 CentOS Linux release 7.2.1511 (Core) [greys@s3 ~]$ {% endhighlight %}

See Also

• basic Unix commands
• Unix Commands
• How To: Generate SSH key
• How To: Change SSH key passphrase
• Important SSH server configuration options
• id – print user identity
• ssh port
• ssh port forwarding
• SSH reference
• Using multiple SSH ports
• How To: Check SSH key fingerprint