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RedHat 9 (Linux i386) - man page for ctermid (redhat section 3)

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

NAME
       ctermid - get controlling terminal name

SYNOPSIS
       #include <stdio.h>

       char *ctermid(char *s);

DESCRIPTION
       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.

RETURN VALUE
       The pointer to the pathname.

CONFORMING TO
       POSIX.1

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)

GNU					    1993-04-06				       CTERMID(3)


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