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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ATTRIBUTES | CONFORMING TO | BUGS | SEE ALSO | COLOPHON |
CTERMID(3) Linux Programmer's Manual 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).
┌──────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├──────────┼───────────────┼─────────┤
│ctermid() │ Thread safety │ MT-Safe │
└──────────┴───────────────┴─────────┘
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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GNU 2019-03-06 CTERMID(3)
Pages that refer to this page: ttyname(3) , ttyname_r(3)
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