+ style globbing when matching path names. However,
+ since it accesses the file system, _\bg_\bl_\bo_\bb(3) can take a
+ long time to complete for some patterns, especially
+ when the pattern references a network file system that
+ is mounted on demand (automounted). The _\bf_\ba_\bs_\bt_\b__\bg_\bl_\bo_\bb
+ option causes s\bsu\bud\bdo\bo to use the _\bf_\bn_\bm_\ba_\bt_\bc_\bh(3) function,
+ which does not access the file system to do its
+ matching. The disadvantage of _\bf_\ba_\bs_\bt_\b__\bg_\bl_\bo_\bb is that it is
+ unable to match relative path names such as _\b._\b/_\bl_\bs or
+ _\b._\b._\b/_\bb_\bi_\bn_\b/_\bl_\bs. This has security implications when path
+ names that include globbing characters are used with
+ the negation operator, '!', as such rules can be
+ trivially bypassed. As such, this option should not be
+ used when _\bs_\bu_\bd_\bo_\be_\br_\bs contains rules that contain negated
+ path names which include globbing characters. This
+ flag is _\bo_\bf_\bf by default.
+
+ fqdn Set this flag if you want to put fully qualified host
+ names in the _\bs_\bu_\bd_\bo_\be_\br_\bs file. I.e., instead of myhost you
+ would use myhost.mydomain.edu. You may still use the
+ short form if you wish (and even mix the two). Beware
+ that turning on _\bf_\bq_\bd_\bn requires s\bsu\bud\bdo\bo to make DNS lookups
+ which may make s\bsu\bud\bdo\bo unusable if DNS stops working (for
+ example if the machine is not plugged into the
+ network). Also note that you must use the host's
+ official name as DNS knows it. That is, you may not
+ use a host alias (CNAME entry) due to performance
+ issues and the fact that there is no way to get all
+ aliases from DNS. If your machine's host name (as
+ returned by the hostname command) is already fully
+ qualified you shouldn't need to set _\bf_\bq_\bd_\bn. This flag is
+ _\bo_\bf_\bf by default.
+