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