Quicksort, and timing code for the lab
	There are a bunch of ways to handle the timing
	quicksort.cpp has an example

gettimeofday, and microseconds
	Precise and with huge range, but not very convenient
	quicksort scaling

Package management:
	apt-get, aptitude, apt, apt-cache, etc
		There are a few competing tools
		synaptic too
	Actual install is done by dpkg
		dpkg -i ...
		Downloading something outside the package manager uses this

What if we can't use the package manager?
	Could just download directly
		Example:  Blender versions
	snap
	Could just download the source code and build it

Libraries:
	A binary might end up with old libraries inside it
	Example:  UT2004 binary and sound
		I probably won't bother to make it actually work

Package managers and versions:
	A new version brings new packages
	Debian example:  trixie was just released
		But all my systems are still on bookworm
	Release schedule varies by distribution
		Compare and contrast debian and ubuntu

Linux versions:
	A distribution version will pick a kernel version
	Version number goes up sometimes
	Linus changes the name when he feels like it

Build systems:
	Used to be everything used make
		I talked about this in CS311 last week
	Now there are more!
		ninja, cmake, meson, bazel, Qmake, etc