Manpages - ctermid.3

ctermid - get controlling terminal name

  #include <stdio.h>

  char *ctermid(char *s);

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

*ctermid*():

      _POSIX_C_SOURCE

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.

The pointer to the pathname.

For an explanation of the terms used in this section, see *attributes*(7).

POSIX.1-2001, POSIX.1-2008, Svr4.

The returned pathname 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.

*ttyname*(3)

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