Please don't use images for text. You can copy/paste the text alone. 500B vs 20KB - same information.
The page where you ran sudo didn't have correct commands. Details matter.
Why was "driverless list!" used? That was not the command requested.
Here's what I get from the correct command:
Code:
$ driverless list
DEBUG: Started ippfind (PID 417966)
DEBUG: Started post-processing (PID 417967)
ippfind: Unable to use Bonjour: Daemon not running
DEBUG: PID 417967 (Post-processing) exited with no errors.
DEBUG: PID 417966 (ippfind) stopped with status 2!
and with ippfind:
Code:
$ ippfind
ippfind: Unable to use Bonjour: Daemon not running
Bonjour is the Apple name of the service similar to ZeroConf. Apple has been running the "CUPS" project for years. On Linux, the ZeroConf protocol is implemented by avahi. I think all desktop versions of Ubuntu install and enable it by default.
If I enable avahi, then run those commands again ...
Code:
$ driverless list
DEBUG: Started ippfind (PID 12065)
DEBUG: Started post-processing (PID 12066)
DEBUG: PID 12065 (ippfind) stopped with status 1!
DEBUG: PID 12066 (Post-processing) exited with no errors.
$ ippfind
ipp://romulus.local:631/printers/BRFAX
ipp://romulus.local:631/printers/MFC240C
ipp://romulus.local:631/printers/Samsung_ML-1740
ipp://romulus.local:631/classes/laser
ipp://romulus.local:631/printers/scx4100
Romulus is my print server on the network. It has a Samsung laser printer and a Brother MVC all-in-one device connected. The romulus.local is proof that avahi is being used. {hostname}.local is how avahi makes accessing local systems possible for people who don't run an internal DNS or modify all the /etc/hosts files on all their systems. That's a name resolution thing.
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