title: How do I filter logcat messages in the terminal without a tag?
body: <p>Android Studio's logcat is unusable; it goes in and out and rarely shows messages on restart, so I've started using adb logcat on my terminal.  Reading <a href="http://developer.android.com/tools/debugging/debugging-log.html" rel="nofollow">http://developer.android.com/tools/debugging/debugging-log.html</a> gives examples of filtering with a tag.  What if I don't know the tag, but want to show all error with an error substring I know?</p>