Skip site navigation (1)Skip section navigation (2)

FreeBSD Man Pages

Man Page or Keyword Search:
Man Architecture
Apropos Keyword Search (all sections) Output format
home | help
CHECK_UTILITY_COMPAT(3)                       FreeBSD Library Functions Manual

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 variable
     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>.

FreeBSD 11.0-PRERELEASE        October 27, 2002        FreeBSD 11.0-PRERELEASE

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | FILES | ERRORS | HISTORY | AUTHORS

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=check_utility_compat&sektion=3&manpath=FreeBSD+10.0-RELEASE>

home | help