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CTERMID(3)                 Linux Programmer's Manual                CTERMID(3)



NAME
       ctermid - get controlling terminal name

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

       char *ctermid(char *s);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       ctermid(): _POSIX_C_SOURCE || _XOPEN_SOURCE

DESCRIPTION
       ctermid()  returns  a string which is the pathname for the current con-
       trolling terminal for this process.  If s is NULL, a static  buffer  is
       used,  otherwise  s  points to a buffer used to hold the terminal path-
       name.  The symbolic constant L_ctermid is the maximum number of charac-
       ters in the returned pathname.

RETURN VALUE
       The pointer to the pathname.

CONFORMING TO
       Svr4, POSIX.1-2001.

BUGS
       The  path  returned may not uniquely identify the controlling terminal;
       it may, for example, be /dev/tty.

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

SEE ALSO
       ttyname(3)

COLOPHON
       This page is part of release 3.05 of the Linux  man-pages  project.   A
       description  of  the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.



GNU                               2007-07-26                        CTERMID(3)