tty(1)

NAME

tty, pty — get the name of the terminal

SYNOPSIS

tty [-s]

pty [-s]

DESCRIPTION

tty and pty print the path name of the user's terminal. The -s option inhibits printing of the terminal path name and any diagnostics, providing a means to test only the exit code.

RETURN VALUE

Exit status codes for tty are:

2: Invalid options were specified,
1: The standard input is not a terminal or pseudo-terminal,
0: The standard input is a terminal or pseudo-terminal.

Exit status codes for pty are:

2: Invalid options were specified,
1: The standard input is not a pseudo-terminal,
0: The standard input is a pseudo-terminal.

DIAGNOSTICS

not a tty: standard input is not a terminal or pseudo-terminal for tty.
not a pty: standard input is not a pseudo-terminal for pty.

AUTHOR

tty was developed by AT&T. pty was developed by HP.

STANDARDS CONFORMANCE

tty: SVID2, SVID3, XPG2, XPG3, XPG4, POSIX.2