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Language Ccpp Cref Man Ctermid.htm 

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<h3>CTERMID(3)          Linux Programmer's Manual          CTERMID(3)
</h3>

<h3>NAME
</h3>       ctermid - get controlling terminal name

<h3>SYNOPSIS
</h3>       #include &lt;stdio.h&gt;

       char *ctermid(char *s);

<h3>DESCRIPTION
</h3>       ctermid()  returns  a string which is the pathname for the
       current controlling terminal for this process.   If  s  is
       NULL,  a  static  buffer  is used, otherwise s points to a
       buffer used to hold the terminal pathname.   The  symbolic
       constant  L_ctermid is the maximum number of characters in
       the returned pathname.

<h3>RETURN VALUE
</h3>       The pointer to the pathname.

<h3>CONFORMS TO
</h3>       POSIX.1

<h3>BUGS
</h3>       The path returned may not uniquely identify  the  control-
       ling terminal; it may, for example, be /dev/tty.

       It  is not assured that the program can open the terminal.

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<h3>SEE ALSO
</h3><p>
<a href=ttyname.htm>ttyname</a>, 
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<h3>GNU                       April 6, 1993                         1
</h3>


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