lsmod command is used to display the status of modules in the Linux kernel. It results in a list of loaded modules. lsmod is a trivial program which nicely formats the contents of the /proc/modules, showing what kernel modules are currently loaded.

Syntax:

lsmod

Example: Run lsmod at the command line to list all active kernel modules.

lsmod

Output:

Output Format: There are three columns in output.

• First, column is used for ‘Name‘ of the module file. Or you can say

  Name = Module file name  -  Module file extension(eg .o or .ko)  
  

• Second, column is used for ‘size‘ of the module in Bytes.
• The third column in output is for ‘used by‘. It is basically used to display the number of instances of the module which are used.