[SOLVED] Names of Portage utilities

[sdz]

I returned to Gentoo after several years. I remembered two utilities (or maybe they were combined) to run occasionally for Gentoo Portage maintenance.

1. What is the utility which deep scans each system library file for any missing shared library dependencies? I do not recall if it was smart enough to know the package name to install the missing shared library dependency.

2. What is the utility that checks the portage config files for unnecessary entries? One example is an entry in package.mask for a version which is now stable.

[irets]

1. What is the utility which deep scans each system library file for any missing shared library dependencies? I do not recall if it was smart enough to know the package name to install the missing shared library dependency.

revdep-rebuild?

2. What is the utility that checks the portage config files for unnecessary entries? One example is an entry in package.mask for a version which is now stable.

I believe eix-test-obsolete is what you're looking for.
Remember to update the database with eix-update first though.

Welcome back and happy new year.

[Ionen]

1. What is the utility which deep scans each system library file for any missing shared library dependencies? I do not recall if it was smart enough to know the package name to install the missing shared library dependency.

revdep-rebuild?

Note this tool is essentially obsolete, not only does portage have a preserve-libs mechanism (keeps in-use shared libraries even if an upgrade/depclean removed it, offers to rebuild, and actually removes once it's resolved) but it's also considered a bug if a package relies on this, i.e. supposed to have automatic rebuilds by using binding operators and subslot bumps if (for example) soname changed or possibly ABI issues without a soname change that revdep-rebuild would have no idea about.

At best searching for missing libs may make sense if you're trying to strip the system for embedded use disregarding portage's dependencies, or for anything portage didn't install (although I'd suggest finding/making ebuilds rather than populate /usr/local).

[sdz]

These were the commands. Thank you both and for the advice on revdep-rebuild.