volume-configured say command

say_with_volume.sh

#!/bin/sh
​
# ~/say_with_volume.sh "hello world" # default volume is 20
# ~/say_with_volume.sh "hello world" 30
​
volume=`osascript -e "output volume of (get volume settings)"`
default_volume=20
say_volume=$2
​
if [ $volume = "0" ]; then
  # If the volume is zero, the script doesn't do anything.
  exit 0
fi
​
if [ "${say_volume}" = "" ]; then
  osascript -e "set Volume output volume ${default_volume}"
else
  osascript -e "set Volume output volume ${say_volume}"
fi
say -v Samantha "${1}"
osascript -e "set Volume output volume ${volume}"