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MODPROBE(8)                                            modprobe                                           MODPROBE(8)



NAME
       modprobe - Add and remove modules from the Linux Kernel

SYNOPSIS
       modprobe [-v] [-V] [-C config-file] [-n] [-i] [-q] [-b] [modulename] [module parameters...]

       modprobe [-r] [-v] [-n] [-i] [modulename...]

       modprobe [-c]

       modprobe [--dump-modversions] [filename]

DESCRIPTION
       modprobe intelligently adds or removes a module from the Linux kernel: note that for convenience, there is no
       difference between _ and - in module names (automatic underscore conversion is performed).  modprobe looks in
       the module directory /lib/modules/`uname -r` for all the modules and other files, except for the optional
       configuration files in the /etc/modprobe.d directory (see modprobe.d(5)).  modprobe will also use module
       options specified on the kernel command line in the form of <module>.<option> and blacklists in the form of
       modprobe.blacklist=<module>.

       Note that unlike in 2.4 series Linux kernels (which are not supported by this tool) this version of modprobe
       does not do anything to the module itself: the work of resolving symbols and understanding parameters is done
       inside the kernel. So module failure is sometimes accompanied by a kernel message: see dmesg(8).

       modprobe expects an up-to-date modules.dep.bin file as generated by the corresponding depmod utility shipped
       along with modprobe (see depmod(8)). This file lists what other modules each module needs (if any), and
       modprobe uses this to add or remove these dependencies automatically.

       If any arguments are given after the modulename, they are passed to the kernel (in addition to any options
       listed in the configuration file).

OPTIONS
       -a, --all
           Insert all module names on the command line.

       -b, --use-blacklist
           This option causes modprobe to apply the blacklist commands in the configuration files (if any) to module
           names as well. It is usually used by udev(7).

       -C, --config
           This option overrides the default configuration directory (/etc/modprobe.d).

           This option is passed through install or remove commands to other modprobe commands in the
           MODPROBE_OPTIONS environment variable.

       -c, --showconfig
           Dump out the effective configuration from the config directory and exit.

       --dump-modversions
           Print out a list of module versioning information required by a module. This option is commonly used by
           distributions in order to package up a Linux kernel module using module versioning deps.

       -d, --dirname
           Root directory for modules, / by default.

       --first-time

           which it depends.

       --force-modversion
           When modules are compiled with CONFIG_MODVERSIONS set, a section detailing the versions of every
           interfaced used by (or supplied by) the module is created. If a module fails to load and the kernel
           complains that the module disagrees about a version of some interface, you can use "--force-modversion" to
           remove the version information altogether. Naturally, this check is there for your protection, so using
           this option is dangerous unless you know what you're doing.

           This applies any modules inserted: both the module (or alias) on the command line and any modules on which
           it depends.

       -f, --force
           Try to strip any versioning information from the module which might otherwise stop it from loading: this
           is the same as using both --force-vermagic and --force-modversion. Naturally, these checks are there for
           your protection, so using this option is dangerous unless you know what you are doing.

           This applies to any modules inserted: both the module (or alias) on the command line and any modules it on
           which it depends.

       -i, --ignore-install, --ignore-remove
           This option causes modprobe to ignore install and remove commands in the configuration file (if any) for
           the module specified on the command line (any dependent modules are still subject to commands set for them
           in the configuration file). Both install and remove commands will currently be ignored when this option is
           used regardless of whether the request was more specifically made with only one or other (and not both) of
           --ignore-install or --ignore-remove. See modprobe.d(5).

       -n, --dry-run, --show
           This option does everything but actually insert or delete the modules (or run the install or remove
           commands). Combined with -v, it is useful for debugging problems. For historical reasons both --dry-run
           and --show actually mean the same thing and are interchangeable.

       -q, --quiet
           With this flag, modprobe won't print an error message if you try to remove or insert a module it can't
           find (and isn't an alias or install/remove command). However, it will still return with a non-zero exit
           status. The kernel uses this to opportunistically probe for modules which might exist using
           request_module.

       -R, --resolve-alias
           Print all module names matching an alias. This can be useful for debugging module alias problems.

       -r, --remove
           This option causes modprobe to remove rather than insert a module. If the modules it depends on are also
           unused, modprobe will try to remove them too. Unlike insertion, more than one module can be specified on
           the command line (it does not make sense to specify module parameters when removing modules).

           There is usually no reason to remove modules, but some buggy modules require it. Your distribution kernel
           may not have been built to support removal of modules at all.

       -S, --set-version
           Set the kernel version, rather than using uname(2) to decide on the kernel version (which dictates where
           to find the modules).

       --show-depends

           MODPROBE_OPTIONS environment variable.

       -V, --version
           Show version of program and exit.

       -v, --verbose
           Print messages about what the program is doing. Usually modprobe only prints messages if something goes
           wrong.

           This option is passed through install or remove commands to other modprobe commands in the
           MODPROBE_OPTIONS environment variable.

ENVIRONMENT
       The MODPROBE_OPTIONS environment variable can also be used to pass arguments to modprobe.

COPYRIGHT
       This manual page originally Copyright 2002, Rusty Russell, IBM Corporation. Maintained by Jon Masters and
       others.

SEE ALSO
       modprobe.d(5), insmod(8), rmmod(8), lsmod(8), modinfo(8)

AUTHORS
       Jon Masters <[email protected]>
           Developer

       Robby Workman <[email protected]>
           Developer

       Lucas De Marchi <[email protected]>
           Developer



kmod                                                  03/01/2015                                          MODPROBE(8)