find / -xdev -type f -ls|sort -nr -k 7,7

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LEARN ABOUT REDHAT

sane-find-scanner

sane-find-scanner(1)					      General Commands Manual					      sane-find-scanner(1)

NAME

       sane-find-scanner - find SCSI and USB scanners and their device files

SYNOPSIS

       sane-find-scanner [-h|-?]  [-v] [-q] [-f] [devname]

DESCRIPTION

       sane-find-scanner  is  a command-line tool to find SCSI and some USB scanners and determine their Unix device files. It's part of the sane-
       backends package.

       For SCSI scanners, it checks the default generic SCSI device files (e.g., /dev/sg0) and /dev/scanner. The test is done by  sending  a  SCSI
       inquiry	command  and  looking for a device type of "scanner" or "processor" (some old HP scanners seem to send "processor"). So sane-find-
       scanner will find any SCSI scanner connected to those default device files even if it isn't supported by any SANE backend.

       For USB scanners, first the USB kernel scanner device files (e.g. /dev/usb/scanner0), /dev/usb/scanner, and /dev/usbscanner are tested. The
       files  are  opened  and	the vendor and device ids are determined if the operating system supports this feature. Currently USB scanners are
       only found this way if they are supported by the Linux scanner module or the FreeBSD or OpenBSD uscanner driver.  After	that  test,  sane-
       find-scanner  tries  to scan for USB devices found by the USB library libusb (if available). There is no special USB class for scanners, so
       the heuristics used to distinguish scanners from other USB devices is not perfect. sane-find-scanner will even find USB scanners, that  are
       not supported by any SANE backend.

       sane-find-scanner won't find parallel port scanners, or scanners connected to proprietary ports.

OPTIONS

       -h, -?  Prints a short usage message.

       -v      Verbose	output. If used once, sane-find-scanner shows every device name and the test result.  If used twice, SCSI inquiry informa-
	       tion and the USB device descriptors are also printed.

       -q      Be quiet. Print only the devices, no comments.

       -f      Force opening all explicitely given devices as SCSI and USB devices. That's useful if sane-find-scanner is wrong in  determing  the
	       device type.

       devname Test device file "devname". No other devices are checked if devname is given.

EXAMPLE

       sane-find-scanner -v
       Check all SCSI and USB devices for available scanners and print a line for every device file.

       sane-find-scanner /dev/scanner
       Look for a (SCSI) scanner only at /dev/scanner and print the result.

SEE ALSO

       sane(7), sane-scsi(5), sane-usb(5), scanimage(1), xscanimage(1), xsane(1), sane-"backendname"(5)

AUTHOR

       Oliver Rauch, Henning Meier-Geinitz and others

SUPPORTED PLATFORMS

       USB support is limited to Linux (kernel, libusb), FreeBSD (kernel, libusb), NetBSD (libusb), OpenBSD (kernel, libusb). Detecting the vendor
       and device ids only works with Linux or libusb.

       SCSI support is available on Irix, EMX, Linux, Next, AIX, Solaris, FreeBSD, NetBSD, OpenBSD, and HP-UX.

BUGS

       No support for parallel port scanners yet.

								    15 Sep 2002 					      sane-find-scanner(1)

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