Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

FreeBSD 11.0 - man page for check_utility_compat (freebsd section 3)

CHECK_UTILITY_COMPAT(3) 				   BSD Library Functions Manual 				   CHECK_UTILITY_COMPAT(3)

NAME
check_utility_compat -- determine whether a utility should be compatible
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <unistd.h> int check_utility_compat(const char *utility);
DESCRIPTION
The check_utility_compat() function checks whether utility should behave in a traditional (FreeBSD 4.7-compatible) manner, or in accordance with IEEE Std 1003.1-2001 (``POSIX.1''). The configuration is given as a comma-separated list of utility names; if the list is present but empty, all supported utilities assume their most compatible mode. The check_utility_compat() function first checks for an environment vari- able named _COMPAT_FreeBSD_4. If that environment variable does not exist, then check_utility_compat() will attempt to read the contents of a symbolic link named /etc/compat-FreeBSD-4-util. If no configuration is found, compatibility mode is disabled.
RETURN VALUES
The check_utility_compat() function returns zero if utility should implement strict IEEE Std 1003.1-2001 (``POSIX.1'') behavior, and nonzero otherwise.
FILES
/etc/compat-FreeBSD-4-util If present, a symbolic link whose expansion gives system-wide default settings for the check_utility_compat() function.
ERRORS
No errors are detected.
HISTORY
The check_utility_compat() function first appeared in FreeBSD 5.0.
AUTHORS
This manual page was written by Garrett Wollman <wollman@FreeBSD.org>.
BSD
October 27, 2002 BSD