How to use the command lsmod (with examples)

The lsmod command is used to display the status of Linux kernel modules. It allows you to see which kernel modules are currently loaded in your system. This can be useful for troubleshooting, checking the status of installed modules, and identifying conflicting modules.

Use case 1: List all currently loaded kernel modules

Code:

lsmod

Motivation:

• This use case is useful when you need to quickly check the loaded kernel modules on your system. It can help you identify which modules are currently active and running.

Explanation:

• The lsmod command has no arguments. When it is run without any arguments, it will display a list of all currently loaded kernel modules.

Example output:

Module                  Size   Used by
nls_utf8               16384  1
isofs                  40960  1
uas                    28672  0
usb_storage            77824  2 uas
crc32c_generic         16384  0
crc32c_intel           24576  0
ext4                  790528  1
mbcache                16384  1 ext4
jbd2                  139264  1 ext4
crc16                  16384  1 ext4
...

Conclusion:

• The lsmod command is a simple yet powerful tool for inspecting the status of loaded kernel modules. It provides a quick overview of the modules currently active on your system.