This has been around long enough that it was on the old Solaris workstations I used at my last job. Except on the Solaris boxes it actually made a very loud an

This has been around long enough that it was on the old Solaris workstations I used at my last job. Except on the Solaris boxes it actually made a very loud and obnoxious steam whistle noise to go with the animation, just to make sure everyone in the office knew that you mistyped `ls`. Turning down the volume didn't even work because it specifically sent the audio to the hardware speaker securely located inside the case. Needless to say, I quickly added `alias sl=ls` to my .alias as soon as the embarassment subsided.