zlib is a general purpose, lossless data-compression library.
To see what versions of zlib are available type
module avail zlib
To see what other modules are needed, what commands are available and how to get additional help type
module help zlib
To use zlib, include a command like this in your batch script or interactive session to load the zlib module:
module load zlib
Be sure you also load any other modules needed, as listed by the
module help zlib command.