say command macOS terminal examples

We are all living in the days where operating systems have voice assistants installed, back in the days say command was very popular to convert text to speech using macOS X terminal.

Syntax: say [-v voice] [-f file | string ...]
Example: using String
say "Hello, World! This is your macOS terminal say command saying hello!
Example: using external file
say -f externalFile.txt
Example: change voice -v (Agnes, Albert, Alex, Bad, Bahh, Bells, Boing, Bruce, Bubbles, Cellos, Deranged, Fred, Good, Hysterical, Junior, Kathy, Pipe, Princess, Ralph, Trinoids, Vicki, Victoria, Whisper, Zarvox )
say -v Agnes "Hello there!"
say -v Cellos "Hello there!"
say -v Ralph "Today is a good day!"
say -v Trinoids "This is really a good idea!"