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The effective gid of this process. If you are on a machine that supports
membership in multiple groups simultaneously, gives a space separated list
of groups you are in. The first number is the one returned by
getegid(), and the subsequent ones by
getgroups(), one of which may be the same as the first number.
Similarly, a value assigned to ``
$)'' must also be a space-separated list of numbers. The first number is used
to set the effective gid, and the rest (if any) are passed to
setgroups(). To get the effect of an empty list for
setgroups(), just repeat the new effective gid; that is, to
force an effective gid of 5 and an effectively empty
setgroups() list, say
$) = "5 5"
(Mnemonic: parentheses are used to GROUP things. The effective gid is the group that's RIGHT for you, if you're running setgid.)
Note: ``$<'', ``$>'', ``
$('' and ``
$)'' can be set only on machines that support the corresponding set[re][ug]id() routine. ``
$('' and ``
$)'' can be swapped only on machines supporting
Source: Perl predefined variables
Copyright: Larry Wall, et al.
(Corrections, notes, and links courtesy of RocketAware.com)
Up to: Process Limits: Identity
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