On Debian systems, the complete text of the Creative Commons Zero v1.0
Universal License can be found in "/usr/share/common-licenses/CC0-1.0". 

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; version 3 of the license.

This package is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.

On Debian systems, the complete text of the GNU Lesser General Public
License version 3 can be found in "/usr/share/common-licenses/LGPL-3".