Quote Originally Posted by artik
If you don't know what non-GPL packages are included, maybe you can me direct to the place where I can ask?
Or at least review the licenses of non-GPL packages.
Most of the software in Knoppix is directly from Debian.
All Debian-packages allways installs their copyright-texts to /usr/share/doc/PACKAGE_NAME/copyright

So you could check all those files to see which has non-GPL licenses. Knoppix 4.0.2 CD has 1187 such files:
Code:
knoppix@0[knoppix]$ find /usr/share/doc -name copyright | sort
/usr/share/doc/aalib1/copyright
/usr/share/doc/ace-of-penguins/copyright
/usr/share/doc/acpi/copyright
/usr/share/doc/acroread/copyright
/usr/share/doc/adduser/copyright
/usr/share/doc/aespipe/copyright
/usr/share/doc/airsnort/copyright
/usr/share/doc/akregator/copyright
/usr/share/doc/alevt/copyright
/usr/share/doc/alien/copyright
...
/usr/share/doc/zip/copyright
/usr/share/doc/zlib1g/copyright
/usr/share/doc/zlib1g-dev/copyright
/usr/share/doc/zr364xx-modules-2.6.12/copyright
/usr/share/doc/zydas-modules-2.6.12/copyright
/usr/share/doc/3270-common/copyright
If you only want to remove packages which are non-free by Debians standards, you can start kpackage and see what packages are mentioned in non-free section.

For Knoppix 4.0.2 CD there are these packages in non-free:
Code:
non-free/admin
  bluez-firmware
non-free/graphics
  giflib-bin
  giflib3g
non-free/net
  x3270
  3270-common
non-free/text
  acroread
non-free/utils
  lha
  unarj