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<B><A HREF="sane-find-scanner.1.html">sane-find-scanner(1)</A></B> SANE Scanner Access Now Easy <B><A HREF="sane-find-scanner.1.html">sane-find-scanner(1)</A></B>
</PRE>
<H2>NAME</H2><PRE>
sane-find-scanner - find SCSI and USB scanners and their device files
</PRE>
<H2>SYNOPSIS</H2><PRE>
<B>sane-find-scanner</B> [<B>-h</B>|<B>-?</B>] [<B>-v</B>] [<B>-q</B>] [<B>-f</B>] [<I>devname</I>]
</PRE>
<H2>DESCRIPTION</H2><PRE>
<B>sane-find-scanner</B> 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 <B>SCSI</B> scanners, it checks the default generic SCSI device files
(e.g., <I>/dev/sg0</I>) and <I>/dev/scanner</I>. 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 <B>sane-find-</B>
<B>scanner</B> will find any SCSI scanner connected to those default device
files even if it isn't supported by any SANE backend.
For <B>USB</B> scanners, first the USB kernel scanner device files (e.g.
<I>/dev/usb/scanner0</I>), <I>/dev/usb/scanner</I>, and <I>/dev/usbscanner</I>) 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, <B>sane-find-</B>
<B>scanner</B> 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. <B>sane-find-scanner</B> 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. <B>sane-find-scanner</B> will even find USB scanners, that
are not supported by any SANE backend.
<B>sane-find-scanner</B> won't find parallel port scanners, or scanners con-
nected to proprietary ports.
</PRE>
<H2>OPTIONS</H2><PRE>
<B>-h,</B> <B>-?</B> Prints a short usage message.
<B>-v</B> Verbose output. If used once, <B>sane-find-scanner</B> shows every
device name and the test result. If used twice, SCSI inquiry
information and the USB device descriptors are also printed.
<B>-q</B> Be quiet. Print only the devices, no comments.
<B>-f</B> Force opening all explicitely given devices as SCSI and USB
devices. That's useful if <B>sane-find-scanner</B> is wrong in
determing the device type.
<B>devname</B> Test device file "devname". No other devices are checked if
devname is given.
</PRE>
<H2>EXAMPLE</H2><PRE>
<B>sane-find-scanner</B> <B>-v</B>
Check all SCSI and USB devices for available scanners and print a line
for every device file.
<B>sane-find-scanner</B> <B>/dev/scanner</B>
Look for a (SCSI) scanner only at /dev/scanner and print the result.
</PRE>
<H2>SEE ALSO</H2><PRE>
<B><A HREF="sane.7.html">sane(7)</A></B>, <B><A HREF="sane-scsi.5.html">sane-scsi(5)</A></B>, <B><A HREF="sane-usb.5.html">sane-usb(5)</A></B>, <B><A HREF="scanimage.1.html">scanimage(1)</A></B>, <B><A HREF="xscanimage.1.html">xscanimage(1)</A></B>,
<B><A HREF="xsane.1.html">xsane(1)</A></B>, <B>sane-"backendname"</B>(5)
</PRE>
<H2>AUTHOR</H2><PRE>
Oliver Rauch, Henning Meier-Geinitz and others
</PRE>
<H2>SUPPORTED PLATFORMS</H2><PRE>
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.
</PRE>
<H2>BUGS</H2><PRE>
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 <B><A HREF="sane-find-scanner.1.html">sane-find-scanner(1)</A></B>
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