added sudo command not existent error handling

pman.sh

@@ -78,9 +78,14 @@ elif [ "$more_arguments" = "true" ]; then
   exit 1
 fi
 
-# If sudo is needed and necessary (and installed), prepend it
-if [ "$su_needed" = "true" ] && [ "$UID" != 0 ] && command -v "sudo" &>/dev/null; then
+# If sudo is needed and necessary (and installed), prepend it, if not installed throw error
+if [ "$su_needed" = "true" ] && [ "$UID" != 0 ]; then
+  if command -v "sudo" &>/dev/null; then
     sudo $command $command_args "${@}"
+  else
+    echo "sudo command needed but not found" > /dev/stderr
+    exit 1
+  fi
 else
   $command $command_args "${@}"
 fi