CHECK_UTILITY_COMPAT(3) BSD Library Functions Manual CHECK_UTILITY_COMPAT(3)NAMEcheck_utility_compat — determine whether a utility should be compatible
Standard C Library (libc, -lc)
check_utility_compat(const char *utility);
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 variable
named _COMPAT_FreeBSD_4. If that environment variable does not exist,
then check_utility_compat() will attempt to read the contents of a sym‐
bolic link named /etc/compat-FreeBSD-4-util. If no configuration is
found, compatibility mode is disabled.
The check_utility_compat() function returns zero if utility should imple‐
ment strict IEEE Std 1003.1-2001 (“POSIX.1”) behavior, and nonzero other‐
/etc/compat-FreeBSD-4-util If present, a symbolic link whose expansion
gives system-wide default settings for the
No errors are detected.
The check_utility_compat() function first appeared in FreeBSD 5.0.
This manual page was written by Garrett Wollman ⟨wollman@FreeBSD.org⟩.
BSD October 27, 2002 BSD