Search notes:

/etc

Most configuration files are located under the /etc directory.

Because /etc is used in the boot process (as is also /usr), it should be in the root partition.

Files and directories found in /etc include

`adjtime`
`alternatives/`
`apache2/`
`apt/`
`asound.conf`
`bashrc`
`bitcoin/`
`ca-certificates.conf`	controls which certificates will or won't be installed to `/etc/ssl/certs`
`conf.d`
`cron.d`
`cron.daily`
`cron.hourly`
`cron.monthly`
`cron.weekly`
`crontab`
`cups`
`dbus-1`
`dconf`
`debian_version`
`default`
`dpkg`
`environment`
`exports`
`fonts`
`fstab`
`group`
`grub.d`
`gshadow`
`gtk-2.0`
`hostname`
`hosts`
`hosts.allow`
`hosts.deny`
`hosts.equiv`
`initcpio`
`initscript`
`inittab`
`init.d`
`inputrc`
`issue`
`issue.net`
`ld_so.cache`
`ld_so.conf`
`ld.so.conf.d`
`locale.conf`
`localtime`
`login.defs`
`machine-id`
`magic`
`makepkg.conf`
`mime.types`	Media (MIME) types and the extensions that represent them.
`mkinitcpio.conf`
`mkinitcpio.d`
`modprobe.d`
`modules-load.d`
`mtab`
`my.cnf`
`mysql`
`netconfig`
`netctl/`
`nsswitch.conf`
`ntp.conf`
`opt``
`oraInst.loc`
`os-release`
`pacman.conf`
`pam.d`
`papersize`
`passwd`
`profile`
`protocols`
`R/`
`resolv.conf`
`samba`
`sane.d`
`security`
`selinux`
`services`
`sgml`
`shadow`
`shells`	List of login shells on the system.
`skel`
`ssl`
`sudo.conf`
`sudoers`
`suid-debug`
`sysctl.conf`
`sysctl.d`
`syslog.conf`
`systemd`
`terminal-colors.d`
`udev`
`updatedb.conf`
`vconsole.conf`
`vim`
`wgetrc`
`X11`
`xdg`
`youtube-dl.conf`
`yum.conf`
`yum`
`yum.repos.d`

*-release files

*-release files, depending on the distribution, include

alpine-release
arch-release
debian_version
gentoo-release
oracle-release
redhat-release (which I found to co-exist with oracle-release in a WSL Oracle 9.1 distribution).
SuSE-release
system-release (which I found to be a symlink to oracle-relase in the aforementioned WSL distribution)
…

TODO: are the hyphens correct for non Debian distributions?