Your first step in using AMPL/Gurobi link is to download the appropriate distribution for your platform: amplgurobilink8.1.1_mswin64.zip: 64-bit Windows distribution amplgurobilink8.1.1_linux64.tgz: 64-bit Linux distribution amplgurobilink8.1.1.pkg: 64-bit Mac OS X distribution amplgurobilink8.1.1_power64.tgz: 64-bit AIX distribution Extract the contents first. For Windows, extraction is done by unzipping the file. For Linux, it is done with the following command: tar xvfz amplgurobilink8.1.1_linux64.tgz For Mac OS X, simply double-click on the installer file. This will install the files into /Library/amplgurobi811 and create links in /usr/local/bin. After the contents are extracted, you should open doc/index.html and readme files, which provide instructions for activating license and completing installation, and user guide.