Hourly announcement with quiet hours

chime.sh

#!/bin/bash
# Announce the current hour
# 
# Use cron to schedule this on the hour:
# 0 * * * * /path/to/script/chime.sh
#
# Change the voice used in System Preferences
# under Accessibility > Speech 

# Wake up the text-to-speech engine, which sometimes
# misses the first part of text and just says "o'clock"
say " "
sleep 2

# 24-hour time for if statements
HOUR=$(date +%k)

# Silence from 1am through 9am
if [ $HOUR -gt 9 ]
then
	# If past noon, use 12-hour format
	# AM/PM should be obvious
	if [ $HOUR -gt 12 ]
	then
		HOUR=$(date +%l)
	fi
	
	# Announce hour
	say "Its " $HOUR " o'clock"
else
	# Instead of hour 0, say midnight
	if [ $HOUR -eq 0 ]
	then
		say "Its midnight"
	fi
fi