+
+# on ubuntu 16.04 which didn't run this script, some things which didn't
+# apply:
+# /etc/dpkg/dpkg.cfg.d/fai didn't exist,
+# machine-id was already setup.
+
+# on that system and a debian stretch system, after reboot,
+# some things done here don't seem to persist:
+# some thin/etc/mtab is symlink somewhere else,
+# and mailname is $HOSTNAME.lan
+
+# the adjtime thing is to support changing the system clock
+# from representing UTC (the default) to localtime (windows default).
+
+# afaik, the only useful thing here for me is setting /etc/hostname
+