groupexists
Prototype: groupexists(group)
Return type: class
Description: Returns whether a group group exists on this host.
The group may be specified by name or identifier.
Arguments:
group: Group name or identifier, in the range.*
Example:
body common control
{
bundlesequence  => { "example" };
}
###########################################################
bundle agent example
{     
classes:
  "gname" expression => groupexists("users");
  "gid"   expression => groupexists("100");
reports:
  gname::
    "Group exists by name";
  gid::
    "Group exists by id";
}
