sane-find-scanner.1

sane-find-scanner(1)     SANE Scanner Access Now Easy     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 USB scanners
       and determine their Unix device files. Its primary aim is to make  sure
       that scanners can be detected by SANE backends.

       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 "proces-
       sor" (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 also tries to find out the type of USB chip
       used in the scanner. If detected, it will be printed after  the  vendor
       and  product  ids.  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  con-
       nected 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
               information 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 ven-
       dor 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.
       Detection of USB chipsets is limited to GrandTech 6801 and 6816, Mustek
       chips and National Semiconductor lm983x chips.

sane-backends 1.0.12-cvs          18 Jul 2003             sane-find-scanner(1)