Com web hosting - 154 Part II . Running the Show floppy
154 Part II . Running the Show floppy 65712 0 sg 36120 0 scsi_mod 124600 1 sg parport_pc 39724 0 parport 47336 1 parport_pc ext3 128424 2 jbd 86040 1 ext3 This output shows a variety of modules that have been loaded on a Linux system, including several to support the ALSA sound system, some of which provide OSS compatibility (snd_seq_oss). To find information about any of the loaded modules, use the modinfo command. For example, you could type the following: # modinfo -d snd-seq-oss OSS-compatible sequencer module Not all modules have descriptions available. In this case, however, the snd-seqoss module is described as an OSS-compatible sequencer module. You can also use the -a option to see the author of the module, or -n to see the object file representing the module. The author information often has the e-mail address of the driver s creator, so you can contact the author if you have problems or questions about it. Loading Modules You can load any module that has been compiled and installed (to the /lib/ modules directory) into your running kernel using the modprobe command. A common reason for loading a module is to use a feature temporarily (such as loading a module to support a special file system on a floppy you want to access). Another reason is to identify a module that will be used by a particular piece of hardware that could not be autodetected. Here is an example of the modprobe command being used to load the parport module, which provides the core functions to share parallel ports with multiple devices: # modprobe parport After parport is loaded, you can load the parport_pc module to define the PC-style ports available through the interface. The parport_pc module lets you optionally define the addresses and IRQ numbers associated with each device sharing the parallel port. For example: # modprobe parport_pc io=0×3bc irq=auto In this example, a device is identified as having an address of 0×3bc, and the IRQ for the device is autodetected.
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