|CTERMID(3)||Linux Programmer's Manual||CTERMID(3)|
NAMEctermid - get controlling terminal name
char *ctermid(char * s );
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
DESCRIPTIONctermid() 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 VALUEThe pointer to the pathname.
Multithreading (see pthreads(7))The ctermid() function is thread-safe with exceptions. It is not thread-safe if called with a NULL parameter.
CONFORMING TOSvr4, POSIX.1-2001.
BUGSThe 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.
COLOPHONThis page is part of release 3.53 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/.