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25 lines
342 B
C
25 lines
342 B
C
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/* See LICENSE file for copyright and license details. */
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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int
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main(void)
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{
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char *tty;
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if((tty = ttyname(STDIN_FILENO))) {
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puts(tty);
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return 0;
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}
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else if(errno == ENOTTY) {
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puts("not a tty");
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return 1;
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}
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else {
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perror("ttyname");
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return 2;
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}
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}
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