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I am just playing with my OS-X terminal.
When I use the command: who
It result with the following output:
raj console Sep 3 09:37
raj ttys000 Sep 11 16:58
raj ttys002 Sep 11 17:53
raj ttys004 Sep 11 17:53
I'm confused with what is meant by ttys000, ttys002 & ttys004?
Everytime you open up a new terminal window it's allocated a "pseudo teletype" aka ptty. When the os needs to send some info to one windows, it just specifies the ptty it's going to get sent to.
You'll notice that as you open and close terminal windows, the number of lines listed there will grow and shrink.
That's it!
man ttys = ttys -- terminal initialization information
man ttys command doesn't even have an s character. I bet it's plural like tty is teletype and ttys is for teletypes.
Nov 14, 2018 at 15:51