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    The following form allows you to view linux man pages.

    Command:

    ttyname

    
    
    

    SYNOPSIS

           #include <unistd.h>
    
           char *ttyname(int fd);
    
           int ttyname_r(int fd, char *buf, size_t buflen);
    
    
    

    DESCRIPTION

           The  function  ttyname() returns a pointer to the null-terminated path-
           name of the terminal device that is open on the file descriptor fd,  or
           NULL on error (for example, if fd is not connected to a terminal).  The
           return value may point to static data, possibly overwritten by the next
           call.   The function ttyname_r() stores this pathname in the buffer buf
           of length buflen.
    
    
    

    RETURN VALUE

           The function ttyname() returns a pointer to a pathname on success.   On
           error,  NULL is returned, and errno is set appropriately.  The function
           ttyname_r() returns 0 on success, and an error number upon error.
    
    
    

    ERRORS

           EBADF  Bad file descriptor.
    
           ENOTTY File descriptor does not refer to a terminal device.
    
           ERANGE (ttyname_r()) buflen was too small to allow  storing  the  path-
                  name.
    
    
    

    ATTRIBUTES

       Multithreading (see pthreads(7))
           The ttyname() function is not thread-safe.
    
           The ttyname_r() function is thread-safe.
    
    
    

    CONFORMING TO

           4.2BSD, POSIX.1-2001.
    
    
    

    SEE ALSO

           fstat(2), ctermid(3), isatty(3)
    
    
    

    Linux 2013-06-21 TTYNAME(3)

    
    
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