Comment by dzdt

A grad school prank one of my friends pulled on another:

    echo sleep -1 >> .login

was appended to the .login file of the victims account. The victim stepped away from the terminal briefly leaving themselves logged in allowing the prankster to make the addition. It was days later with over 20 sleep statements appended before it was apparent that something was uniquely wrong with that student's login. Day after day the victim grew increasingly frustrated with the slower and slower times from initial login to active terminal. Finally when it was getting unbearable the prank was discovered.