Fix getLinuxName usage of fs-extra in shared

ts/util/os/osMain.ts

@@ -2,8 +2,26 @@
 // SPDX-License-Identifier: AGPL-3.0-only
 
 import os from 'os';
+import { readFileSync } from 'fs-extra';
 import { getOSFunctions } from './shared';
 
-const OS = getOSFunctions(os.release());
+function getLinuxName(): string | undefined {
+  if (os.platform() !== 'linux') {
+    return undefined;
+  }
+
+  const etcOsRelease = readFileSync('/etc/os-release', 'utf-8');
+  const match = etcOsRelease.match(/^PRETTY_NAME=(.+?)$/m);
+  if (!match) {
+    return undefined;
+  }
+
+  return match[1];
+}
+
+const OS = {
+  ...getOSFunctions(os.release()),
+  getLinuxName,
+};
 
 export default OS;