[$] Finding a successor to the FHS

The purpose of the Filesystem
Hierarchy Standard (FHS) is to provide a specification for
filesystem layout; it specifies the location for files and directories
on a Linux system to simplify application development for multiple
distributions. In its heyday it had some success at this, but the
standard has been frozen in time since 2015, and much has changed
since then. There is a slow-moving effort
to revive the FHS and create a FHS 4.0, but a recent discussion
among Fedora developers also raised the possibility of standardizing
on the suggestions in systemd's file-hierarchy
documentation, which has now been added to the Linux Userspace API
(UAPI) Group's specifications.