Seismic Unix
We recommend that you download Seismic Unix and install the program as per the instructions contained within.
wget http://www.geol.lsu.edu/jlorenzo/downloads/cwp/cwp_su_all_48.tz
Or, you can navigate with a web browser to http://www.geol.lsu.edu/jlorenzo and click at the link to "Free Geophysics Software"