sane-find-scanner(1SANE Scanner Access Now Easane-find-scanner(1)NAMEsane-find-scanner - find SCSI and USB scanners and their
device files
SYNOPSISsane-find-scanner [-h|-?] [-v] [-q] [-f] [devname]
DESCRIPTIONsane-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 "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 back-
end.
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 heuris-
tics 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 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.
EXAMPLEsane-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 ALSOsane(7), sane-scsi(5), sane-usb(5), scanimage(1), xscanim-
age(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.
sane-backends 1.0.12 15 Sep 2002 sane-find-scanner(1)
