If you know a thing or two about Unix, then you know to be careful with the ‘rm’ command. Those two letters – short for the word ‘remove’ – can delete files faster than you can think twice, shout “no, stop!” and hit CTRL-C.
Pixar had something very similar happen to them when they were developing their hit movie Toy Story 2. A mistyped rm command inadvertently deleted the entire movie. Then, to make matters worse, they discovered their backups were all bad. This short video, narrated by two of the technical leads from Pixar, explains how the whole thing went down and the one random thing that saved the whole project.
A good reminder to everyone: whether you’re developing the next great app or producing the next blockbuster movie, backup often and make sure your backups actually work.