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How to setup Passwordless SSH

tags: guide ssh

On the local Machine

For Linux system

Run the below commands only



ssh-keygen
ssh-copy-id

For windows

Open cmd and run

ssh-keygen

This is a once in a lifetime time command 😂. Dont run it again and again otherwise it will replace your old keys which might have been used to login to other servers. If you already have ran this command, you will have keys in .ssh folder and you can use that for next steps.

Then Manually copy files

  1. Once key is generated, go to run and type .ssh
  2. Copy content local id_rsa.pub to remote directory file ~/.ssh/authorized_keys
    (Optional) You can use scp as well

On the server

  • Do an ssh to your server using ssh yourusername@servername.xyz
  • Check if .ssh folder and .ssh/authorized_keys file is alredy present. If not present use the below command




mkdir ~/.ssh
touch ~/.ssh/authorized_keys
chmod 700 ~/.ssh
chmod 600 ~/.ssh/authorized_keys

Copy content of local pc id_rsa.pub to remote server file ~/.ssh/authorized_keys

You may also need to change/verify the permissions of your home directory to remove write access for the group and others.

chmod go-w ~

source: Stack Overflow

Misc Tips

  • Get all info about PID ps -f <PID>

Contributer

Last changed by 
 
Rohit Lal
211

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