CALIOP level 2, CloudSat-2B, and CloudSat-MODIS HDF readers in C.
At first, you prepare a Linux machine and install HDF. Any OSs are ok if you can easily install HDF by using a package utility. Check Makefile. Then just type make and a command in your terminal (see README). If you were in trouble, ask a computer otaku. He/She must love to answer you.
# a machine with a memory of 2 Gbyte or more is recommended.
CALIOP-L1 reader and sample data (353 Mbyte).