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Installing OpenSSH
OpenSSH consists of two components, the server daemon that runs in the 
background that accepts SSH connections, and the client that runs on a laptop, 
workstation, or another server that gives you the ability to connect to an SSH server 
and run commands. All operating systems nowadays give you access to an OpenSSH 
client that you can use to make the connection to the server, so that requirement 
is probably already met. When it comes to Linux, most distributions give you the 
OpenSSH client already. You can verify that by running 
which ssh
 at your shell 
prompt. If you have the client installed, your output should read 
/usr/sbin/ssh
.
If, for some reason, you don't have this package installed and you've received no 
output from the previous command (which would be rare), you can install the 
OpenSSH client with the following command:
sudo apt install openssh-client 

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Connecting to Networks