TTY(C) XENIX System V TTY(C)
Name
tty - Gets the terminal's name.
Syntax
tty [ -s ]
Description
The tty command prints the pathname of the user's terminal
on the standard output. The -s option inhibits printing,
allowing you to test just the exit code.
Exit Codes
0 if the standard input is a terminal, 1 otherwise.
Diagnostics
not a tty If the standard input is not a terminal and -s
is not specified
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