1) Extract the Perple_X programs and data files in:
 
   http://www.perplex.ethz.ch/perplex/ibm_and_mac_archives/LINUX/Perp07_Linux_****.zip   
   http://www.perplex.ethz.ch/perplex/ibm_and_mac_archives/Perp_datafiles.zip 

   to a single directory (where **** indicates compiler or system information).

2) It may be necessary to convert the data files from Windows to UNIX format. Refer to 

   www.perplex.ethz.ch/perplex/ibm_and_mac_archives/README_UNIX_USERS.txt

   for file conversion instructions.  

3) Run Perple_X from a UNIX shell see

   www.perplex.ethz.ch/perplex/ibm_and_mac_archives/README_UNIX_USERS.txt

   for further instructions. Running Perple_X by clicking on the program icon causes
   all sorts confusion, see 

   www.perplex.ethz.ch/faq/running_from_a_windows_console.txt

   for a discussion of the analogous problem for Microsoft Windows operating systems.

4) LINUX archives may not be current. Check the update file:

   www.perplex.ethz.ch/PerpleX_Updates.html

   to establish whether the archive contains programs with bugs that may have 
   consequences for you.

5) To use MATLAB to process Perple_X ouput see:

   www.perplex.ethz.ch/perplex/ibm_and_mac_archives/README_MATLAB_PLOT.txt

6) If you have no idea what Perple_X does or how to run it, then the tutorial at:

   http://serc.carleton.edu/NAGTWorkshops/petrology/teaching_examples/44110.html

   may be helpful. If your interest is in the calculation of physicochemical properties,
   then following the worked problem at:

   http://www.perplex.ethz.ch/perplex07_seismic_velocity.html

   is the fastest route to getting results. A complete list of Perple_X documentation, 
   such as it is, is at:

   http://www.perplex.ethz.ch/perplex_documentation.html