Turn on or off CapsLock leds
From Linux Shell Scripting Tutorial - A Beginner's handbook
To turn on CapsLock, use the setleds command as follows:
setleds -D +caps
To turn off CapsLock, enter:
setleds -D -caps
- -D : Change both the VT flags and their default settings.
- +caps : Clear CapsLock.
- -caps : Set CapsLock.
Note: At present, the CapsLock setting complements the Shift key when applied to letters. Pressing the CapsLock key complements the CapsLock setting.