tty - print the path of the terminal connected to standard
S
\bSY
\bYN
\bNO
\bOP
\bPS
\bSI
\bIS
\bS
t
\btt
\bty
\by [-s] [--silent] [--quiet]
D
\bDE
\bES
\bSC
\bCR
\bRI
\bIP
\bPT
\bTI
\bIO
\bON
\bN
This manual page documents the GNU version of t
\btt
\bty
\by. t
\btt
\bty
\by
prints the path name of the tty connected to its standard
input. It prints `not a tty' if the standard input is not
a tty. Its exit status is:
0 if the standard input is a tty
1 if the standard input is not a tty
2 if given incorrect arguments
O
\bOP
\bPT
\bTI
\bIO
\bON
\bNS
\bS
-_
\bs, --_
\bs_
\bi_
\bl_
\be_
\bn_
\bt, --_
\bq_
\bu_
\bi_
\be_
\bt
Print nothing; only return an exit status.
The long-named options can be introduced with `+' as well
as `--', for compatibility with previous releases. Even-
tually support for `+' will be removed, because it is
incompatible with the POSIX.2 standard.
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