Merge pull request #65 from hydephp/fix-selfupdate-command-issues

Try renaming updated file to catch and rethrow with permissions hint

app/Commands/SelfUpdateCommand.php

@@ -274,7 +274,18 @@ protected function replaceApplication(string $downloadedFile): void
         $this->debug("Moving file $downloadedFile to $applicationPath");
 
         // Replace the current application with the downloaded one
-        rename($downloadedFile, $applicationPath);
+        try {
+            // This might give Permission denied if we can't write to the bin path (might need sudo)
+            rename($downloadedFile, $applicationPath);
+        } catch (Throwable $exception) {
+            // Check if it is a permission issue
+            if (Str::containsAll($exception->getMessage(), ['rename', 'Permission denied'])) {
+                throw new RuntimeException('The application path is not writable. Please rerun the command with elevated privileges (e.g. using sudo).', 126, $exception);
+            }
+
+            // Unknown error, rethrow the exception
+            throw $exception;
+        }
     }
 
     protected function updateViaComposer(): void