Linux Module

 Module location 

Kernel modules are located in /lib/modules/$(uname -r) and can be compiled for specific kernel versions.

Module Utilities

There are a number of utility programs that are used with kernel modules:

• lsmod
  List loaded modules.
• insmod
  Directly load modules.
• rmmod
  Directly remove modules.
• modprobe
  Load or unload modules, using a pre-built module database with dependency and location information.
• depmod
  Rebuild the module dependency database.
• modinfo
  Display information about a module.

*** Use the modprobe command to load a module:

$ modprobe e1000e

**** Use the modprobe -r command to unload or remove a module:

$ modprobe -r e1000e

**** modprobe requires a module dependency database be updated. Use the depmod command to generate or update the file /lib/modules/$(uname -r)/modules.dep.

***Use the insmod command to directly load a module (requires fully qualified module name):

$ insmod /lib/modules/$(uname -r)/kernel/drivers/net/ethernet/intel/e1000e.ko

***Use the rmmod command to directly remove a module:

$ rmmod e1000e

*** Use the lsmod command to list the loaded modules:

$ lsmod

*** Use the modinfo command to display information about a module (including parameters):

$ modinfo e1000e