tty
Official Description
Returns the pathname of the terminal device.
Syntax
tty [-s]
Options
-s suppresses reporting the pathname. (It might be useful to check for the existence of a terminal device.)
Oddities
It can be used to determine whether the standard input is a terminal.
Example
$ tty # Current terminal device /dev/pts/0 $ $ tty –s # If successful, stdin is a tty $ print $? 0 $
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