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tty.c - sbase - suckless unix tools
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tty.c (409B)
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1 /* See LICENSE file for copyright and license details. */
2 #include <stdio.h>
3 #include <unistd.h>
4
5 #include "util.h"
6
7 static void
8 usage(void)
9 {
10 enprintf(2, "usage: %s\n", argv0);
11 }
12
13 int
14 main(int argc, char *argv[])
15 {
16 char *tty;
17
18 ARGBEGIN {
19 default:
20 usage();
21 } ARGEND
22
23 if (argc)
24 usage();
25
26 tty = ttyname(STDIN_FILENO);
27 puts(tty ? tty : "not a tty");
28
29 enfshut(2, stdout, "<stdout>");
30 return !tty;
31 }
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