Messaging
talk | Simple chat program. |
write | Send messages to a terminal. |
mesg | Prohibit |
tty | Print your terminal device name. |
Long before instant messaging and texting was invented, users sent
messages to each other with older commands that still exist in OS X. These
include talk and write, which work over OS X terminal devices
(ttys). This style of communication may seem primitive, but occasionally
it can be useful, particularly in pipelines.
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