Using Finder, how can I view /System/Library? Using Finder, how can I view /System/Library?

In fact, I'd really like to do the equivalence of a recursive grep for file names from the root directory using Finder. How can I move around the entire file system with Finder?
Press ⇧⌘G (Shift-Command-G) to bring up Go to Folder and type in the path, then click Go as shown in the image below.  Or if using the mouse or trackpad, click: Finder > Go > Go to Folder



You can also change Finder Preferences to show Hard disks on the Desktop under General and or in Devices under Sidebar, thus being able to open the Macintosh HD from the root of the partition without having to use Go to Folder.