delete_module - Linux
Overview
delete_module
is a Linux command that dynamically unloads a specified kernel module from the running kernel. Kernel modules are used to extend the functionality of the kernel without the need to recompile and reboot the system. Removing a module can free up memory or resolve conflicts with other modules.
Syntax
delete_module [options] <module_name>
Options/Flags
-f
,--force
: Force unload the module, even if it is in use.-v
,--verbose
: Print detailed information while unloading the module.-V
,--version
: Print version information and exit.
Examples
Simple Unloading:
delete_module vfat
Force Unloading:
delete_module -f usb_storage
Verbose Output:
delete_module -v snd_pcm_oss
Common Issues
Module Not Found:
If the specified module is not loaded, the command will fail with an error. Ensure the module is present in /proc/modules
before attempting to unload it.
Module In Use:
Unloading a module that is still actively used can cause system instability. Use the -f
option only if you are sure the module is no longer needed.
Integration
delete_module
can be used in combination with other commands, such as:
lsmod
: To list loaded kernel modules.modprobe
: To load kernel modules (used if you need to reload the module after unloading).
Related Commands
insmod
: Loads a kernel module into the running kernel.modprobe
: Automatically loads required kernel modules.