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On Debian systems, the full text of the GNU General Public License
version 2 can be found in the file `/usr/share/common-licenses/GPL-2'. 

On Debian systems, the full text of the GNU Lesser General Public License
version 2.1 can be found in the file `/usr/share/common-licenses/LGPL-2.1'. 

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