Housekeeping

- Update README
- Run shellcheck on .sh files
- Add helper scripts
- Remove eirene vm variant
- Add post-install checklist

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

hosts/common/user/configs/console/gpg-agent/import-gpg-keys.sh

@@ -1,21 +1,21 @@
-for dir in "$HOME"/.config/sops-nix/secrets/gpg-agent/*; do
-  keyfile="$dir/key"
-  passfile="$dir/pass"
+for dir in "${HOME}"/.config/sops-nix/secrets/gpg-agent/*; do
+  keyfile="${dir}/key"
+  passfile="${dir}/pass"
 
-  if [ ! -f "$keyfile" ]; then
+  if [[ ! -f "${keyfile}" ]]; then
     continue
   fi
 
-  if [ -f "$passfile" ]; then
-    gpg2 --batch --yes --pinentry-mode loopback --passphrase-file "$passfile" --import "$keyfile"
+  if [[ -f "${passfile}" ]]; then
+    gpg2 --batch --yes --pinentry-mode loopback --passphrase-file "${passfile}" --import "${keyfile}"
   else
-    gpg2 --batch --yes --import "$keyfile"
+    gpg2 --batch --yes --import "${keyfile}"
   fi
 
-  gpg2 --with-colons --import-options show-only --import "$keyfile" | grep '^fpr' | cut -d: -f10 | while read -r KEY_ID; do
-    echo "$KEY_ID:6:" >> "$GNUPGHOME"/otrust.txt
+  gpg2 --with-colons --import-options show-only --import "${keyfile}" | grep '^fpr' | cut -d: -f10 | while read -r KEY_ID; do
+    echo "${KEY_ID}:6:" >> "${GNUPGHOME}"/otrust.txt
   done
 done
 
-gpg2 --import-ownertrust "$GNUPGHOME"/otrust.txt
-rm "$GNUPGHOME"/otrust.txt
+gpg2 --import-ownertrust "${GNUPGHOME}"/otrust.txt
+rm "${GNUPGHOME}"/otrust.txt