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<H1>sane-pnm.5</H1>
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<!-- Manpage converted by man2html 3.0.1 -->
<B><A HREF="sane-pnm.5.html">sane-pnm(5)</A></B> SANE Scanner Access Now Easy <B><A HREF="sane-pnm.5.html">sane-pnm(5)</A></B>
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<H2>NAME</H2><PRE>
sane-pnm - SANE PNM image reader pseudo-backend
</PRE>
<H2>DESCRIPTION</H2><PRE>
The <B>sane-pnm</B> library implements a SANE (Scanner Access Now Easy) back-
end that provides access to PNM (Portable aNyMap files, which covers
PBM bitmap files, PGM grayscale files, and PPM pixmap files). The pur-
pose of this backend is primarily to aid in debugging of SANE front-
ends. It also serves as an illustrative example of a minimal SANE
backend.
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<H2>DEVICE NAMES</H2><PRE>
This backend provides two devices called <B>0</B> and <B>1.</B>
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<H2>CONFIGURATION</H2><PRE>
No configuration required.
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<H2>FILES</H2><PRE>
<I>/usr/local/lib/sane/libsane-pnm.a</I>
The static library implementing this backend.
<I>/usr/local/lib/sane/libsane-pnm.so</I>
The shared library implementing this backend (present on systems
that support dynamic loading).
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<H2>ENVIRONMENT</H2><PRE>
<B>SANE_DEBUG_PNM</B>
If the library was compiled with debug support enabled, this en-
vironment variable controls the debug level for this backend.
E.g., a value of 128 requests all debug output to be printed.
Smaller levels reduce verbosity.
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<H2>BUGS</H2><PRE>
If the <B>sane-pnm</B> backend is installed and <B><A HREF="saned.8.html">saned(8)</A></B> is used to allow
users on remote computers to scan on the local machine, PNM files can
be read by the remote user. This is limited to the files <B><A HREF="saned.8.html">saned(8)</A></B> can
access (usually it's running as user "sane"). All PNM files can be read
if <B><A HREF="saned.8.html">saned(8)</A></B> runs as root which isn't recommended anyway. The <B>sane-pnm</B>
backend is disabled by default. If you want to use it, enable it with
configure (see <I>configure</I> <I>--help</I> for details). Be sure that only trusted
users can access the <B>sane-pnm</B> backend over <B><A HREF="saned.8.html">saned(8)</A></B>.
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<H2>AUTHOR</H2><PRE>
Andreas Beck, Gordon Matzigkeit, and David Mosberger
</PRE>
<H2>SEE ALSO</H2><PRE>
<B><A HREF="sane.7.html">sane(7)</A></B>, <B><A HREF="saned.8.html">saned(8)</A></B>
14 Jul 2008 <B><A HREF="sane-pnm.5.html">sane-pnm(5)</A></B>
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