Reload current chrome tab on a file change

chrome-reload.sh

#!/bin/bash
# inspired by
# http://linux.die.net/man/1/inotifywait
# http://razius.com/articles/auto-refreshing-google-chrome-on-file-changes/
# http://unix.stackexchange.com/questions/37258/refresh-reload-active-browser-tab-from-command-line

# Usage:
# ./chrome-refresh.sh /folder/to/watch /some/folder/file_to_watch.html
 
TIME_FORMAT='%F %H:%M'
OUTPUT_FORMAT='%T Event(s): %e fired for file: %w. Refreshing.'
 
RELOAD_KEYS="CTRL+R"
BROWSER="google-chrome"
CURRENT=''
 
while inotifywait -q -r -e modify --timefmt "${TIME_FORMAT}" --format "${OUTPUT_FORMAT}" "$@"; do
    sleep .5s # lets a flask server catch up with the file change
    CURRENT=$(xdotool getactivewindow)
    xdotool search --class ${BROWSER} windowactivate --sync
    xdotool search --class ${BROWSER} key --clearmodifiers ${RELOAD_KEYS}

    xdotool windowfocus --sync ${CURRENT}
    xdotool windowactivate --sync ${CURRENT}

done

Uau man, this is ingenious!