checkgid man page on Darwin

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CHECKGID(8)		  BSD System Manager's Manual		   CHECKGID(8)

NAME
     checkgid — validate group identifiers

SYNOPSIS
     checkgid group ...

DESCRIPTION
     Given one or more group identifers on the command line (e.g., "httpd" or
     "#-1"), figure out whether they'll be valid for the server to use at run-
     time.

     If a groupname isn't found, or we can't setgid() to it, return -1.	 If
     all groups are valid, return 0.

     This may need to be run as the superuser for the setgid() to succeed;
     running it as any other user may result in a false negative.

SEE ALSO
     httpd(8)

BSD			       October 21, 2008				   BSD
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