From their respective tag wiki's:

> The resolver is a set of routines in the C library that provide access to the Internet Domain Name System (DNS). The resolver configuration file contains information that is read by the resolver routines the first time they are invoked by a process. The file is designed to be human readable and contains a list of keywords with values that provide various types of resolver information.

( resolv.conf )

> The file is a plain-text file usually created by the network administrator or by applications that manage the configuration tasks of the system. The resolvconf program is one such program on FreeBSD or other Unix machines which manages the resolv.conf file.

( resolvconf )

So one is a file and the other is the program that changes the file.

I have suggested some edits to those tags to make the issue a little more clear.

@Seth Thanks, now I understand better, nd hopefully, other users too :)

I think that the title of this question should be changed to something like "Why I get unable to locate package update error while updating?". Because the main problem is the command. But if the user still can not access to the GUI, him should create a new answer.

Is this right, or there is a better idea?

Is this question welcome in our community?

VTR:

@Lucio I don't see why not...

@Lucio done.