> Gnome file manager at least provide ctrl + L.

The Finder has an equivalent with Command-Shift-G, and if that key shortcut is too cumbersome it (along with all other Mac menu items) can be re-bound in System Preferences under the Keyboard prefpane.

Most of the things mentioned in this comment chain are easily discoverable in the Finder's menus… it really pays to peruse menus in Mac apps when searching for a function.

If you enable the path bar, you can right click on the path bar and "Copy as Pathname" on whatever is down there (which will be the current folder if nothing is selected, or whatever is selected).

If the path bar is showing a folder, you can right click it and select "Open in terminal".

osx has Ctrl+Shift+G to quickly paste a path to go to

There is a keyboard shortcut for “go to folder” which my fingers know but my mind does not (on mobile at the moment).

The resulting path input modal even supports tab completion.

FYI, holding option key with a directory or file selected and choosing "copy" will copy the path to the selected item. With nothing selected, it will copy the path to the location of the open finder window.

The copy operation (⌘C) has an optional variant (⌥⌘C) which copies the pathnames to the clipboard as text rather than copying file references.

This will copy either the directory (if no selection) or the selected file(s).

If you enable the path bar, I believe this is also a copyable element.

Finally, dropping a file or directory into a plain text control that cannot take file or folder references (like this HN comment box) will fall back to the path name.