Add Copy Path to nautilus

README.md

Add Copy Path to nautilus

Download the file then move it and make executable and restart nautilus to see the Copy Path icon

wget https://gist.githubusercontent.com/meramsey/f1d20da371de82e801df19c92a673e63/raw/2bb9cb9007f21e85b00aade70d5db21c41b44f44/nautilus-copy-paths.py
sudo mv nautilus-copy-paths.py /usr/share/nautilus-python/extensions/nautilus-copy-paths.py
sudo chmod +x /usr/share/nautilus-python/extensions/nautilus-copy-paths.py
nautilus -q

See also related: https://askubuntu.com/questions/225666/copy-file-and-folder-path-from-nautilus/1367229#1367229 https://fostips.com/open-as-administrator-ubuntu-21-04-fix/

nautilus-copy-paths.py

import os
from gi import require_version

require_version("Gtk", "3.0")
require_version("Nautilus", "3.0")

from gi.repository import Gdk, Gtk, Nautilus, GObject
from gettext import gettext, bindtextdomain, textdomain

NAUTILUS_PATH = "/usr/bin/nautilus"


class NautilusAdmin(Nautilus.MenuProvider, GObject.GObject):
    """Simple Nautilus extension that adds some file path actions to
    the right-click menu, using GNOME's new admin backend."""

    def __init__(self):
        pass

    def get_file_items(self, window, files):
        """Returns the menu items to display when one or more files/folders are
        selected."""
        # Don't show when more than 1 file is selected
        if len(files) != 1:
            return
        file = files[0]

        # Add the menu items
        items = []
        self._setup_gettext()
        self.window = window
        if file.get_uri_scheme() == "file":  # must be a local file/directory
            if file.is_directory():
                if os.path.exists(NAUTILUS_PATH):
                    items += [self._create_nautilus_item(file)]

        return items

    def get_background_items(self, window, file):
        """Returns the menu items to display when no file/folder is selected
        (i.e. when right-clicking the background)."""

        # Add the menu items
        items = []
        self._setup_gettext()
        self.window = window
        if file.is_directory() and file.get_uri_scheme() == "file":
            if os.path.exists(NAUTILUS_PATH):
                items += [self._create_nautilus_item(file)]

        return items

    def _setup_gettext(self):
        """Initializes gettext to localize strings."""
        try:  # prevent a possible exception
            locale.setlocale(locale.LC_ALL, "")
        except:
            pass
        bindtextdomain("nautilus-admin", "/usr/share/locale")
        textdomain("nautilus-admin")

    def _create_nautilus_item(self, file):
        item = Nautilus.MenuItem(
            name="NautilusAdmin::Nautilus",
            label=gettext("Copy path"),
            tip=gettext("Copy File path to clipboard"),
        )
        item.connect("activate", self._nautilus_run, file)
        return item

    def _nautilus_run(self, menu, file):
        """'Copy File path' menu item callback."""
        uri = file.get_uri()
        file_path = uri.replace("file://", "")
        clipboard = Gtk.Clipboard.get(Gdk.SELECTION_CLIPBOARD)
        clipboard.set_text(file_path, -1)
        clipboard.store()

Recommend actually using the other repository below which adds this via user local setup.
https://github.com/meramsey/nautilus-copy-path