# notification
notify-send "my title" "hello world"

# text-to-speech
spd-say "hello world"

# pop-up dialog
zenity --info --text="hello world"

## to notify when a process ends, you have two options
# 1. if you know you want to notify *before* running the process:
command ; spd-say "process completed"

# 2. if the process is already running, pause with CTRL+Z and resume with `fg`:
command  # (already running)
# hit CTRL+Z to pause the job
fg ; spd-say "process completed"