Originally Posted by cmyster
Regarding the slackpkg search, it could be installed (even via SBo) but if SBo is blacklisted from slackpkg (for example if you want clean-system to skip those), slackpkg will not find it.
The "slackpkg search" command will not find any
package that is not part of the Slackware repository. Blacklisted or not.
The "slackpkg clean-system" command will remove all
packages from your system that are not present in the Slackware repository. But you can blacklist packages (for instance based on their tag, like "SBo" or "alien") so that they will be left alone by "slackpkg clean-system".