modprobe command in Linux
The modprobe command in Linux is used to manage kernel modules. It allows users to insert, remove, and manipulate modules in the Linux kernel. Modprobe can also automatically load dependencies for a module being added. This command is essential for managing hardware drivers and configuring the kernel. By understanding the modprobe command, users can efficiently handle kernel modules to optimize system performance.
modprobe Syntax:
Section titled “modprobe Syntax:”modprobe [options] module_nameLinux modprobe Options:
Section titled “Linux modprobe Options:”| Option | Description |
|---|---|
| -c | Use the specified configuration file |
| -v | Show verbose information |
| -n | Dry-run mode, show actions but do not execute them |
| -q | Quiet mode, suppress normal output |
| -r | Remove the specified module |
| -a | Insert module even if already loaded |
| -s | Log to the system log for each request |
| -t | Set timeout value for network request completion |
| -D | Consider dependencies during insertion and removal |
| -S | Compute and resolve all module symbols |
modprobe Parameters:
Section titled “modprobe Parameters:”| Parameter | Description |
|---|---|
| module_name | Name of the module to insert or remove |
How to use modprobe command:
Section titled “How to use modprobe command:”Load a Module
Section titled “Load a Module”modprobe <module_name>Load the specified module into the Linux kernel.
Remove a Module
Section titled “Remove a Module”modprobe -r <module_name>Unload the specified module from the Linux kernel.
Show Currently Loaded Modules
Section titled “Show Currently Loaded Modules”modprobe -lDisplay a list of modules that are currently loaded in the Linux kernel.
Display Information about a Module
Section titled “Display Information about a Module”modprobe -c | grep <module_name>Retrieve detailed information about a specific module.
Load a Module with Specific Parameters
Section titled “Load a Module with Specific Parameters”modprobe <module_name> param1=value1 param2=value2Load the module with specific parameters provided as key-value pairs.
List Dependencies of a Module
Section titled “List Dependencies of a Module”modprobe -c | grep -A <number_of_lines> depends <module_name>Display the dependencies of a specific module by searching the module config file.
Prevent Module Autoloading
Section titled “Prevent Module Autoloading”echo "blacklist <module_name>" | sudo tee /etc/modprobe.d/blacklist.confCreate a blacklist configuration file to prevent a module from autoloading.
Disable Module Loading during Boot
Section titled “Disable Module Loading during Boot”echo "install <module_name> /bin/true" | sudo tee -a /etc/modprobe.d/blacklist.confPrevent a specific module from loading during boot by setting the install command to /bin/true in the blacklist configuration file.
How do I use modprobe in Linux?
Section titled “How do I use modprobe in Linux?”To use the modprobe command in Linux, execute the following command:
modprobe --option <value>What is the purpose of modprobe in Linux?
Section titled “What is the purpose of modprobe in Linux?”The modprobe command is used in Linux to add or remove kernel modules to the Linux kernel dynamically.
modprobe <module_name>How can I list all currently loaded modules with modprobe?
Section titled “How can I list all currently loaded modules with modprobe?”To list all currently loaded modules using modprobe, run the following command:
lsmodHow do I remove a module using modprobe?
Section titled “How do I remove a module using modprobe?”You can remove a module using modprobe in Linux with the following command:
modprobe -r <module_name>Can I add multiple modules at once with modprobe?
Section titled “Can I add multiple modules at once with modprobe?”Yes, you can add multiple modules at once using modprobe by listing them all in a single command:
modprobe <module1> <module2> <module3>How can I get more information about a specific module using modprobe?
Section titled “How can I get more information about a specific module using modprobe?”To get more information about a specific module using modprobe, you can use the modinfo command. For example:
modinfo <module_name>How do I check if a module is currently loaded with modprobe?
Section titled “How do I check if a module is currently loaded with modprobe?”You can check if a module is currently loaded with modprobe by using the following command:
lsmod | grep <module_name>Is it possible to force loading a module with modprobe even if it might not be recommended?
Section titled “Is it possible to force loading a module with modprobe even if it might not be recommended?”Yes, you can force loading a module with modprobe even if it might not be recommended by using the --force option. For example:
modprobe --force <module_name>How do I see the dependencies of a module with modprobe?
Section titled “How do I see the dependencies of a module with modprobe?”To see the dependencies of a module using modprobe, you can use the following command:
modprobe --show-depends <module_name>Applications of the modprobe command
Section titled “Applications of the modprobe command”- Loading a specific kernel module
- Unloading a kernel module
- Listing currently loaded kernel modules
- Adding or removing kernel module dependencies
- Setting module options or parameters