dhcp include



i want to include all the subnet files under /etc/dhcpd/ to /etc/dhcpd.conf

so here is my content of dhcpd.conf


...
include "/etc/dhcpd/*";


however, the check-syntax reports syntax error, as they do not recognize the wildcard *, and display that " file /etc/dhcpd/* could not be found.

how can i use wildcard to refer to all the files in this directory?

thread closed, this is a duplicate.