find SCSI and USB scanners and their device files
see also :
[-q] [-p] [-f]
[-F filename] [devname]
add an example, a script, a trick and tips
no example yet ...
... Feel free to add your own example above to help other Linux-lovers !
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
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.
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
won’t find most parallel port scanners, or scanners
connected to proprietary ports. Some parallel port
scanners may be detected by sane-find-scanner
-p. At the time of writing this will only detect Mustek
parallel port scanners.
Prints a short usage
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.
Be quiet. Print only the devices, no comments.
Probe parallel port scanners.
Force opening all explicitly given devices as SCSI and
USB devices. That’s useful if
sane-find-scanner is wrong in determining
the device type.
filename is a file that
contains USB descriptors in the format of
/proc/bus/usb/devices as used by Linux.
sane-find-scanner tries to identify the
chipset(s) of all USB scanners found in such a file. This
option is useful for developers when the output of "cat
/proc/bus/usb/devices" is available but the scanner
Test device file "devname". No other devices
are checked if devname is given.
Check all SCSI and USB devices for available scanners and print a
line for every device file.
Look for a (SCSI) scanner only at /dev/scanner and print the
Probe for parallel port scanners.
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
SCSI support is available on Irix, EMX, Linux, Next, AIX,
Solaris, FreeBSD, NetBSD, OpenBSD, and HP-UX.
No support for
most parallel port scanners yet.
Detection of USB chipsets is limited to a few chipsets.
scanimage , xscanimage, xsane,
Henning Meier-Geinitz and others