We notice where important server files get installed. See also Wiki Admin, Wiki Relocation
Find npm global installs.
npm list -g --depth=0
asia.wiki.org
/usr/local/bin/wiki -- executable
/etc/systemd/system/wiki.service -- systemd service
/root/wiki.conf.json -- security config
journalctl -u wiki
asia.wiki.org (disabled)
/usr/local/lib/node_modules/wiki -- global install
~/.wiki -- site flat file database
/etc/init/wiki.conf -- upstart script site 
/etc/init/wiki.conf.json -- security config
/var/log/upstart/wiki.log -- server log
bay.wiki.org
/usr/lib/node_modules/wiki -- global install
/root/.wiki -- site flat file database
/etc/init/wiki.conf -- upstart script (obsolete)
/etc/systemd/system/wiki.service
/root/wiki.conf.json -- security config
/var/log/upstart/wiki.log -- server log (obsolete)
journalctl -f -u wiki
/etc/nginx/sites-enabled/default -- nginx sites
nginx -s reload
eu.wiki.org
/usr/bin/wiki -- old
/usr/local/bin/wiki -- new
/etc/caddy/Caddyfile -- caddy sites
/root/caddy.service -- caddy config
/root/config.json -- security config
systemctl restart caddy
CADDYPATH=/etc/ssl/caddy
/etc/ssl/caddy/acme/acme-v01.api.letsencrypt.org/sites/
journalctl -u caddy
cat .wiki/*.wiki.innovateoregon.org/status/owner.json | jq -r '.name' | sort | uniq -c | sort -nr