view toys/tty.c @ 543:60b97ba66a70

Extensive semi-gratuitous refactoring: factor out common code, handle euid!=uid and egid!=gid cases. (Note: test suite requires root access, possibly container support.)
author Rob Landley <>
date Mon, 12 Mar 2012 23:00:28 -0500
parents 782859fadd20
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/* vi: set sw=4 ts=4:
 * tty.c - Show stdin's terminal name
 * Copyright 2011 Rob Landley <>
 * See


config TTY
	bool "tty"
	default y
	  Show filename of terminal connected to stdin.

	  Prints "not a tty" and exits with nonzero status if no terminal
	  is connected to stdin.

	  -s	silent mode

#include "toys.h"

void tty_main(void)
	char *tty = ttyname(0);

	if (!toys.optflags) puts(tty ? tty : "not a tty");

	toys.exitval = !tty;