espeak

Uses text-to-speech to speak through the default sound device. More information: http://espeak.sourceforge.net.

• Speak a phrase aloud:
  espeak "I like to ride my bike."
• Speak a file aloud:
  espeak -f {{path/to/file}}
• Save output to a WAV audio file, rather than speaking it directly:
  espeak -w {{filename.wav}} "It's GNU plus Linux"
• Use a different voice:
  espeak -v {{voice}}