![]() Now, to sudo, I must use password instead of my real login password: anthonysudotest: sudo -K anthonysudotest: sudo echo -e ' it worked' sudo password for anthony: p a s s w o r d RETURN it worked. In this post, we explained how to set the number of minutes before the sudo password prompt times out, remember to share your thoughts concerning this article or perhaps other useful sudeors configurations for system administrators out there via the feedback section below. According to dannysauer in a comment, you may need to make the same edit to /etc/pam.d/sudo-i as well. Once you’ve entered and confirmed the new password, reboot the system by entering the following: shutdown r. In Windows admin command prompt ( Super + X, A) change the default user to root: ubuntu config -default-user root If you are using Ubuntu 18. The system asks you to type a new UNIX password and then to retype it. Afterwards test if the setting is working by running a command with sudo and wait for 2 minutes to see if the password prompt will time out. Substitute the name of the user for username, then press Enter. ![]() Save the file by pressing and exit using. The screen shot below show the defaults parameters I have set in my /ec/sudoers file. After the BIOS screen, once you see the GRUB boot menu, press the left Shift key or Esc key. ![]() You can also set time to 0 if you want a password prompt for every sudo command you execute, or disable password prompt forever by setting the value -1. To reset a lost Ubuntu password, first, restart your system (or virtual machine). Note: You can set whatever time you want in minutes and make sure to wait before it times out. Then add the following defaults entry, it implies that the sudo password prompt will time out after 20 minutes once sudo is invoked by a user. 1 For completeness, you might want to mention the SUDOPROMPT environment variable (which allows a user to set the prompt persistently) and the sudoers configuration file parameter passprompt that allows administrators to customize it system-wide. In case your user has sudo permissions (which the default user pi has), you can change any of the users passwords by following the steps mentioned. You can run your commands using sudo at the beginning or from the expert mode entering the privileged mode by typing sudo su.
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