Describes the conventions and standards for the layout of the filesystem on [[Linux]] and other Unix-like operating systems. # Notable Items `/opt` is generally for packages that are distributed by a 3rd-party entity and installed using the standard package format for the distribution (i.e. `.deb`, `.rpm`, etc.). Package maintainers *must not* use a direct subdirectory of `/usr` or `/usr/local` for this purpose. For example, [[Golang]] does this wrong.