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UNIX for Dummies Questions & Answers
A terminal controlling a terminal...
Post 302788859 by wisecracker on Tuesday 2nd of April 2013 03:32:03 PM
04-02-2013
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LEARN ABOUT MOJAVE
tcgetsid
tcgetsid(3) BSD Library Functions Manual tcgetsid(3) NAME
tcgetsid -- get the process group ID for the session leader for the controlling terminal SYNOPSIS
#include <termios.h> pid_t tcgetsid(int fildes); DESCRIPTION
The tcgetsid() function obtains the process group ID of the session for which the terminal specified by fildes is the controlling terminal. RETURN VALUES
Upon successful completion, tcgetsid() returns the process group ID associated with the terminal. Otherwise, a value of (pid_t)-1 is returned and errno is set to indicate the error. ERRORS
The tcgetsid() function will fail if: [EACCES] The fildes argument is not associated with a controlling terminal. [EBADF] The fildes argument is not a valid file descriptor. [ENOTTY] The file associated with fildes is not a terminal. SEE ALSO
getsid(2), setpgid(2), setsid(2), tcgetpgrp(3), termios(4) STANDARDS
The tcgetsid() function conforms to IEEE Std 1003.1-2001 (``POSIX.1''). BSD
December 20, 2003 BSD