MacOSX: Reset admin password
Let's say that someone gained access to your computer and changed your main user's password as a prank. You notice when can't
sudo and when you type in your old password, it does not work.
Sadly, its actually really easy to give yourself a new password.
Reboot your mac and login as Single User by holding
command+s on startup.
You will be on a terminal screen, where you need to execute the following commands, assuming your username is
mount -uw /
launchctl load /System/Library/LaunchDaemons/com.apple.opendirectoryd.plist
passwd peperone this will prompt you to type your new password, twice.
And, that is all.