scripts/check-uninsane: implement --verbose flag

scripts/check-uninsane

@@ -8,12 +8,40 @@ echo ""
 OVPNS_IPV4=185.157.162.178
 DOOF_IPV4=205.201.63.12
 
+usage() {
+  echo "usage: check-uninsane [flags ...]"
+  echo "flags:"
+  echo "- --verbose: show commands before running them"
+  exit 1
+}
+
+verbose=
+parseArgs() {
+  while [ "$#" -ne 0 ]; do
+    local arg=$1
+    shift
+    case $arg in
+      (--verbose)
+        verbose=1
+        ;;
+      (*)
+        usage
+        ;;
+    esac
+  done
+}
+
 last_error=0
 check() {
   local label=$1
   shift
-  printf "checking %s\n" "$label"
-  "$@" > /dev/null
+  if [ -n "$verbose" ]; then
+    printf "checking %s (%s) \n" "$label" "$*"
+    "$@"
+  else
+    printf "checking %s\n" "$label"
+    "$@" > /dev/null
+  fi
   local rc=$?
   if [ $rc -ne 0 ]; then
     last_error=$rc
@@ -41,6 +69,7 @@ if [ $last_error -eq 0 ]; then
 fi
 last_error=0
 
+parseArgs "$@"
 
 check "uninsane.org. DNS" nslookup uninsane.org.
 check "[1.1.1.1] uninsane.org. DNS" nslookup uninsane.org. 1.1.1.1