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linux-kernel-module-cheat/modprobe.adoc
Ciro Santilli 64130ecfb9 a bit closer
2018-02-13 16:09:16 +00:00

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=== modprobe
If you are feeling fancy, you can also insert modules with:
....
modprobe dep2
lsmod
# dep and dep2
....
This method also deals with module dependencies, which we almost don't use to make examples simpler:
* https://askubuntu.com/questions/20070/whats-the-difference-between-insmod-and-modprobe
* https://stackoverflow.com/questions/22891705/whats-the-difference-between-insmod-and-modprobe
Removal also removes required modules that have zero usage count:
....
modprobe -r dep2
lsmod
# Nothing.
....
but it can't know if you actually insmodded them separately or not:
....
modprobe dep
modprobe dep2
modprobe -r dep2
# Nothing.
....
so it is a bit risky.
`modprobe` searches for modules under:
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ls /lib/modules/*/extra/
....
Kernel modules built from the Linux mainline tree with `CONFIG_SOME_MOD=m`, are automatically available with `modprobe`, e.g.:
....
modprobe dummy-irq
....