auto advance html slides using xdotool

slides-autoadvance.sh

#!/bin/bash
# dependencies: xdotool
# auto-advance html slides
# <[email protected]>
html_file="$1"
BROWSER=chromium
slide=1

right () {
    slide=$((slide+1))
    log "going right to slide $slide"
    xdotool key --clearmodifiers Right
}
left () {
    slide=$((slide-1))
    log "going left to slide $slide"
    xdotool key --clearmodifiers Left
}
log () {
    echo "$(date) $@"
}

$BROWSER "$html_file"
log "please switch to browser... waiting 5 seconds"
sleep 5
log "testing..."
right
sleep 0.2
left
log "GO"
for slide in {1..20}; do
    sleep 15
    [ $slide -lt 20 ] && right
done
log "all done!"