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CTERMID(3) | Linux Programmer's Manual | CTERMID(3) |
NAME¶
ctermid - get controlling terminal nameSYNOPSIS¶
#include <stdio.h>
char *ctermid(char *s);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
ctermid(): _POSIX_C_SOURCE
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.ATTRIBUTES¶
For an explanation of the terms used in this section, see attributes(7).Interface | Attribute | Value |
ctermid () | Thread safety | MT-Safe |
CONFORMING TO¶
POSIX.1-2001, POSIX.1-2008, Svr4.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 4.16 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.2016-03-15 | GNU |