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Annotation of 43BSD/lib/libc/gen/isatty.c, revision 1.1.1.1

1.1       root        1: #if defined(LIBC_SCCS) && !defined(lint)
                      2: static char sccsid[] = "@(#)isatty.c   5.2 (Berkeley) 3/9/86";
                      3: #endif LIBC_SCCS and not lint
                      4: 
                      5: /*
                      6:  * Returns 1 iff file is a tty
                      7:  */
                      8: 
                      9: #include <sgtty.h>
                     10: 
                     11: isatty(f)
                     12: {
                     13:        struct sgttyb ttyb;
                     14: 
                     15:        if (ioctl(f, TIOCGETP, &ttyb) < 0)
                     16:                return(0);
                     17:        return(1);
                     18: }

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