Here are the instructions to use MSB repository through slackpkg+ 1. Download and install slackpkg+ package from http://slakfinder.org/slackpkg+/ 2. Add msb on REPOPLUS line so that it will become like this REPOPLUS=( slackpkgplus alienbob restricted slacky msb ) You may remove other repositories (except slackpkgplus) if you don't use it 3. Add msb repository information and match it with your Slackware and MSB version, and your architecture Example: For Slackware 15.0 (32 bit) and MATE 1.26: MIRRORPLUS['msb']=http://slackware.uk/msb/15.0/latest/x86/ For Slackware 15.0 (64 bit) and MATE 1.26: MIRRORPLUS['msb']=http://slackware.uk/msb/15.0/latest/x86_64/ 4. Run slackpkg update gpg && slackpkg update 5. You can start managing your MSB packages through slackpkg+