You can change the settings of the variables defined at the top of the Makefile simply by changing the value to the right of the equal sign (=). For instance, if you do not want to use the files located in /etc as input for the maps, but you would rather use files located in another directory, such as /var/etc/domainname, you should change the value of
DIR from DIR=/etc to DIR=/var/etc/domainname. You may also change the value of PWDIR from PWDIR=/etc to PWDIR=/var/etc/domainname.
The variables are:
DIR= The directory containing all of the NIS input files except passwd and shadow. The default value is /etc. Since it is not good practice to use the files in the master server's /etc directory as NIS input files, you should change this value.
PWDIR= The directory containing the passwd and shadow NIS input files. Since it is not good practice to use the files in the master server's /etc directory as NIS input files, you should change this value.
DOM= The NIS domain name. The default value of DOM is set using the domainname command. Remember that most NIS commands use the current machine's domain which is set in the machine's /etc/defaultdomain file.