$ module avail --------------------- /usr/local/modulefiles/Core ---------------------- gcc/6.2 gcc/7.1 gcc/8.1 (D) pgi/16.10 pgi/18.4 (D) ---------------- /usr/local/lmod/lmod/modulefiles/Core ----------------- lmod/6.5 settarg/6.5 Where: D: Default Module Use "module spider" to find all possible modules. Use "module keyword key1 key2 ..." to search for all possible modules matching any of the "keys".