This question is posed as a means to deal with disruptive school kids using "text to speech" facility, hence the need for such command disabling it

Also can such command be made permanent?

  • Were they making it read bad words? – smci Dec 13 '12 at 5:12

Kind of a brute force method, but you can rename the /System/Library/Speech folder or delete it altogether. You might also want to delete or rename the /usr/bin/say binary as they are likely to discover it as well. I've tested this on 10.6, and it is "permanent" in the sense that it will survive reboot.

You could send:

sudo mv /System/Library/Speech /System/Library/Speech.disable


sudo chmod -x /usr/bin/say to disable execution on the binary.

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