[Solved] How to reset /etc/sudoers file in Gnu/Linux, when locked out

user360119 Asks: How to reset /etc/sudoers file in Gnu/Linux, when locked out
I am using AWS Linux AMI2, I added ec2-user ALL=(ALL) ALL and saved the file.

Now when I run any command with sudo it displays [sudo] password for ec2-user:

How to reset this file?

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