How to Change Ubuntu Password Without Knowing It?

Forgetting your Ubuntu password can be quite frustrating, but don't worry, there are ways to change it without knowing the current one. Here’s how you can do it:

1. Boot into recovery mode: Restart your device and when the GRUB menu appears, select the 'Advanced options for Ubuntu' and choose the recovery mode option.
2. Access the root shell: In the recovery menu, select the 'root' option to drop into a root shell prompt.
3. Remount the filesystem in read/write mode: Enter the command 'mount -o rw,remount /' to remount the filesystem in read/write mode.
4. Change the password: Now you can change the password for any user using the 'passwd' command. Simply enter 'passwd ' and follow the prompts to set a new password.
5. Reboot your system: Once the password is changed successfully, reboot your system by entering 'reboot' in the terminal.

It’s important to keep your passwords secure and also have a way to reset them in case you forget. Make sure to create a strong password that is easy for you to remember but difficult for others to guess.