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Return the user's terminal name (POSIX)
tty [-s]
Neutrino
- -s
- Be silent; don't output the terminal name. This option is
useful if you're concerned only with tty's exit status.
The tty utility writes to the standard output the name of the
terminal that's open as standard input. If standard input isn't a terminal
(e.g. it's a file such as /dev/null), the string
not a tty is output instead.
|
The -s option is deprecated by POSIX;
you can achieve the effect of this option, simply and portably, by
redirecting output to /dev/null or by using the shell
builtin, test -c. |
The following command prints /dev/con1
if run on console 1:
tty
The following command prints not a tty
because /dev/null causes
isatty()
to return 0:
tty </dev/null
- 0
- Success.
- > 0
- An error occurred.
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