uninit and auto-init

* Add uninit subcommand, which cleans up all etckeeper and VCS droppings
  in /etc. This is useful if you want to switch to a different VCS and
  don't have any history to preserve. (Preserving history and converting
  is of course possible, but significantly harder.)
* Run etckeeper init on initial install. Closes: #505772
  (The idea being that if someone doesn't want to use git, they can
  immediatly uninit to easily reverse this.)
* Document how to change the VCS used by etckeeper, without preserving
  any history. Preserving history left as an exersise for the reader.
  Closes: #515237

1 files changed, 6 insertions, 0 deletions

diff --git a/uninit.d/50remove-metadata b/uninit.d/50remove-metadata
new file mode 100755
index 0000000..0be8d36
--- /dev/null
+++ b/uninit.d/50remove-metadata
@@ -0,0 +1,6 @@
+#!/bin/sh
+set -e
+
+# Files generated by etckeeper to store metadata the VCS cannot preserve.
+rm -f .etckeeper
+rm -f .metadata # only generated by old versions