A small script that helps reduce eyestrain by periodically dimming the display.

app.sh

#!/bin/sh

# Get the original brightness
BRIGHTNESS=`/rest/brightness -l`;

# Dim the screen to it's lowest setting
`/rest/brightness 0`

# Stop for 5 minutes
sleep 300

# Back to work!
`/rest/brightness ${BRIGHTNESS:60:8}`

Dependencies

http://hints.macworld.com/article.php?story=20090901021817717