Unfortunately the ENVI LiDAR user interface is not supported on Linux. We have a list of supported features by platform at
http://www.harrisgeospatial.com/doc...port.html. However, the ENVI LiDAR API is supported on Linux, so you could write an IDL script to process point clouds. A good place to start is the ENVI::OpenPointCloud method. See
http://www.harrisgeospatial.com/doc...cloud.html for an example.