checks the gid
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page documents briefly the checkgid command.
is a program that checks whether it can setgid to the group
specified. This is to see if it is a valid group for apache2
to use at runtime. If the user (should be run as superuser)
is in that group, or can setgid to it, it will return 0.
page was written by Daniel Stone <daniel[:at:]sfarc[:dot:]net>
for the Debian GNU/Linux distribution, as the original did
not have a manpage.