lsmod

lsmod program to show the status of modules in the Linux Kernel
lsmod
lsmod is a trivial program which nicely formats the contents of the /proc/modules, showing what kernel modules are currently loaded.
This version of lsmod is for kernels 2.5.48 and above. If it detects a kernel with support for old-style modules, it will attempt to run lsmod.modutils in its place, so it is completely transparent to the user.
This manual page Copyright 2002, Rusty Russell, IBM Corporation.
modprobe(8), lsmod.modutils(8)