usbmodules(8) -- Linux man page

NAME

SYNOPSIS

DESCRIPTION

       for module in $(usbmodules --device $DEVICE) ; do

               modprobe -s -k "$module"

       done

The DEVICE environment variable is passed from the kernel to /sbin/hotplug during USB hotplugging if the kernel was configured using usbdevfs. usbmodules currently requires usbdevfs to operate.

When a USB device is removed from the system, the Linux kernel will decrement a usage count on USB driver module. If this count drops to zero (i.e., there are no clients for the USB device driver), then the modprobe -r process that is normally configured to run from cron every few minutes will eventually remove the unneeded module.

OPTIONS

--check modulename

Instead of listing the relevant modules, just exit with code 0 (success) if the given module's exported USB ID patterns matches. Otherwise, return failure. usbmodules emits no output either way.

--device /proc/bus/usb/MMM/NNN

Selects which device usbmodules will examine. The argument is currently mandatory.

--help, -h

Print a help message

--mapfile /etc/hotplug/usb.handmap

Use the specified file instead of the /lib/modules/.../modules.usbmap file corresponding to the running kernel.

--version

Identifies the version of usbutils this tool was built with.

FILES

/lib/modules/<kernel-version>/modules.usbmap

This file is automatically generated by depmod, versions 2.4.2 and later, and is used by usbmodules to determine which modules correspond to which USB ID's.

/proc/bus/usb

An optional interface to USB devices provided by Linux kernels with versions of the 2.4 USB support. Contains per-bus subdirectories with per-device files (offering a usermode driver API as well as access to device and configuration descriptors), a devices file containing a list of all USB devices, and a drivers file listing USB device drivers known to the USB subsystem.

SEE ALSO

AUTHOR

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