Most of remote systems are secured by SSH, and to gain remote control with terminal, you would need to ssh
into the server. You will be prompted to login with your password on every session. To avoid typing password everytime, you need to setup as authorized client. Here is how you can do that with ssh key.
First on your own client machine, generate the $HOME/.ssh/id_rsa.pub
file:
bash> ssh-keygen # When prompted to enter password, simply hit ENTER key to skip it! bash> cat ~/.ssh/id_rsa.pub xxxyyyzzz zemian@myhost # You will see a very long string instead of "xxxyyyzzz".
Now you need to copy this public key string into your remote host. You need to ssh
into the remote host with your valid password first to setup. If successful, the subsequent ssh
into the remote host will not prompt you for password!
bash> ssh myremotehost # Enter password to gain access
After you are in the remote host:
myremotehost> vim ~/.ssh/authorized_keys #Paste and append the "xxxyyyzzz" into above file.
If you don’t already have the ~/.ssh/authorized_keys
file on remote host, then create it, but ensure you don’t let other users or groups to access it. Use command like this to change the permission:
bash> chmod g-rw,o-rw ~/.ssh/authorized_keys
The cool thing about this is that it affects all ssh
related commands, such as scp
will now work without prompting you for password!
Have a productive day!
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