# Software Installation Guide

Filter Content By
Version
Languages

## Software Installation Guide

Make a note of the name and location of the downloaded file.

Your next step is to choose a destination directory. We recommend /opt for a shared installation, but other directories will work as well. Copy the Gurobi distribution to the destination directory and extract the contents. Extraction is done with the following command:

  tar xvfz gurobi6.5.0_linux64.tar.gz

This command will create a sub-directory gurobi650/linux64 that contains the complete Gurobi distribution. Your <installdir> (which we'll refer to throughout this document) will be /opt/gurobi650/linux64.

The Gurobi Optimizer makes use of several executable files. In order to allow these files to be found when needed, you will have to modify a few environment variables:

• GUROBI_HOME should point to your <installdir>.
• PATH should be extended to include <installdir>/bin.
• LD_LIBRARY_PATH should be extended to include <installdir>/lib.
Users of the bash shell should add the following lines to their .bashrc files:
  export GUROBI_HOME="/opt/gurobi650/linux64"
export PATH="${PATH}:${GUROBI_HOME}/bin"
export LD_LIBRARY_PATH="${LD_LIBRARY_PATH}:${GUROBI_HOME}/lib"

Users of the csh shell should add the following lines to their .cshrc files:
  setenv GUROBI_HOME /opt/gurobi650/linux64
setenv PATH ${PATH}:${GUROBI_HOME}/bin
setenv LD_LIBRARY_PATH ${LD_LIBRARY_PATH}:${GUROBI_HOME}/lib

If LD_LIBRARY_PATH is not already set, use the following instead:
  export LD_LIBRARY_PATH="${GUROBI_HOME}/lib"  or  setenv LD_LIBRARY_PATH${GUROBI_HOME}/lib

These paths should be adjusted to reflect your chosen <installdir>.

You'll need to close your current terminal window and open a new one after you have made these changes in order to pick up the new settings.

In some Linux distributions, applications launched from the Linux desktop won't read .bashrc (or .cshrc). You may need to set the Gurobi environment variables in .bash_profile or .profile instead. Unfortunately, the details of where to set these variables vary widely among different Linux distributions. We suggest that you consult the documentation for your distribution if you run into trouble.