[Server-devel] "yum clean all" on Raspbian / Debian?

[Kevin Cole]

There is also the more dangerous:

sudo apt autoremove

where apt THINKS it knows what you no longer need and happily removes
packages from the system. It's often correct in what it guesses, but I
never do it, preferring to evaluate for myself whether or not it's in
use.

And finally, I like the GUI installer / remover "synaptic" since it
lists packages that are "officially supported" vs. packages that are
not (universe and multiverse community supported) and under "Status ->
Not installed (residual config)" it lists packages that have, as you
may have figured out, packages that have been uninstalled, but not
COMPLETELY uninstalled, because they have residual configuration files
lying around. Using synaptic, you can select all of those, and
right-click. In the context menu that pops up, choose "Mark for
complete removal" (in other programs known as "purge") and then
"Apply".

>From the command line, doing the synaptic thing above appears to be
more complicated than necessary. See:

http://superuser.com/questions/448590/how-do-i-remove-configuration-files-for-a-program-thats-not-installed

(When you simpl