面白い書き方見付けた

c:\APP\DoeView>popd

c:\APP>set /p<nul=%date%%time% [pushd:&@pushd doeview >nul 2>&1 && echo ok]||echo fail]
2020/07/31 (金)20:14:34.70 [pushd:ok]

c:\APP\DoeView>set /p<nul=%date%%time% [pushd:&@pushd doeview >nul 2>&1 && echo ok]||echo fail]
2020/07/31 (金)20:14:38.48 [pushd:fail]