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Linux in a Nutshell

This directory of Linux commands is from Linux in a Nutshell, 5th Edition.

Click on any of the 687 commands below to get a description and list of available options. All links in the command summaries point to the online version of the book on Safari Bookshelf.

Buy it now, or read it online on Safari Bookshelf.


sane-find-scanner [options]

Locate SCSI and USB scanners and print their device files, to be sure the scanners can be detected by SANE (Scanner Access Now Easy) backends.



Check only the specified device for a scanner.


Force the opening of any SCSI and USB devices specified with devname, in case the command is wrong in determining the device type.

-h, -?

Print a usage message and exit.


Test for parallel-port scanners. Note that most parallel-port scanners won't be detected, even with this option.


Run quietly, printing only the devices.


Run verbosely. When specified as -v, show every device name and test result; as -vv, also print SCSI inquiry information and USB device descriptors.

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