Passwords (lesson)

prequisites

• start with a Linux image where the student has access to a command shell
• set the student up with sudo before changing the root password
• test that sudo works

Do not change your own password until you know or have changed the root password. It might also be good practice to do the lesson:backup sdcard so you may revert to a working image in case the password access is lost.

aim

This lesson will show how to change the root passwd, and your own password.

• start a command shell and then become the root user via

sudo su -

• change your user passwd via root

passwd <userid>

• answer the prompts.

• Test that you can login as that user via ssh.

ssh user@localhost

Enter your password and see if you obtain a new shell.

If that doesn't work try resetting your password.

You may also set your password from your own shell by typing

passwd