28 lines
1.3 KiB
Markdown
28 lines
1.3 KiB
Markdown
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# Notes about the Linux Kernel
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## Kernel modules
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### How to list all loadable kernel modules?
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Source: [StackExchange](https://unix.stackexchange.com/questions/184877/how-to-list-all-loadable-kernel-modules)
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Question: _How do I list all the available modules in the system? In which directory are they located?_
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By default `modprobe` loads modules from kernel subdirectories located in the `/lib/modules/$(uname -r)` directory. Usually all files have extension `.ko`, so you can list them with
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```shell
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find /lib/modules/$(uname -r) -type f -name '*.ko'
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```
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or, taking into account compressed files:
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```shell
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find /lib/modules/$(uname -r) -type f -name '*.ko*'
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```
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Each module can be also loaded by referring to its aliases, stored in the `/lib/modules/$(uname -r)/modules.alias` (and `modules.alias.bin`).
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However, to load a modules successfully `modprobe` needs their dependencies listed in the file `/lib/modules/$(uname -r)/modules.dep` (and a corresponding binary version `modules.dep.bin`). If some module is present on the system, but is not on the list, then you should run a command `depmod` which will generate such dependencies and automatically include your module to modules.dep and `modules.dep.bin`.
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Additionally, if the module is successfully loaded it will be listed in the file `/proc/modules` (also accessed via command `lsmod`).
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