Description:

Currently, all /etc/rc.d scripts include their /etc/conf.d counterpart using its name explicitly. It would be nicer to derive the conf.d script name from the $0 variable instead.

For instance, if you want to run multiple instances of PostgreSQL, you need to set a different data directory and port for each of them. This could be done by simply creating and editing a copy of /etc/conf.d/postgresql file and creating a symlink:

cp /etc/conf.d/postgresql /etc/conf.d/postgresql1
vim /etc/conf.d/postgresql1
ln -s /etc/rc.d/postgresql /etc/rc.d/postgresql1

However, this is currently impossible, since the name of /etc/conf.d/postgresql is hardcoded into /etc/rc.d/postgresql. You would have to copy the whole rc.d script to achieve the same goal. And you would have to update the copy on each change to the original (caused by postgresql updates). :-(

And there are *many* similar cases. $0 could save a lot of maintenance in these non-standard scenarios (multiple mail servers, multiple DBMSs, ...).