|TTY(1)||General Commands Manual||TTY(1)|
ttyutility writes the name of the terminal attached to standard input to standard output. The name that is written is the string returned by ttyname(3).
If the standard input is not a terminal, the message “not a tty” is written.
The options are as follows:
-soption is deprecated in favor of the “
test -t 0” command.
ttyutility exits 0 if the standard input is a terminal, 1 if the standard input is not a terminal, or >1 if an error occurred. stty(1), test(1), ttyname(3), tty(4)
ttyutility is compliant with the IEEE Std 1003.1-2008 (“POSIX.1”) specification.
ttycommand appeared in Version 1 AT&T UNIX.
|June 3, 2014||OpenBSD-current|