sane-pnm(5)               (14 Jul 2008)               sane-pnm(5)

     NAME
          sane-pnm - SANE PNM image reader pseudo-backend

     DESCRIPTION
          The sane-pnm library implements a SANE (Scanner Access Now
          Easy) backend that provides access to PNM (Portable aNyMap
          files, which covers PBM bitmap files, PGM grayscale files,
          and PPM pixmap files).  The purpose of this backend is pri-
          marily to aid in debugging of SANE frontends.  It also
          serves as an illustrative example of a minimal SANE backend.

     DEVICE NAMES
          This backend provides two devices called 0 and 1.

     CONFIGURATION
          No configuration required.

     FILES
          /usr/lib/x86_64-linux-gnu/sane/libsane-pnm.a
               The static library implementing this backend.

          /usr/lib/x86_64-linux-gnu/sane/libsane-pnm.so
               The shared library implementing this backend (present
               on systems that support dynamic loading).

     ENVIRONMENT
          SANE_DEBUG_PNM
               If the library was compiled with debug support enabled,
               this environment 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.

     BUGS
          If the sane-pnm backend is installed and saned(8) 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 saned(8) can access (usually it's run-
          ning as user "sane"). All PNM files can be read if saned(8)
          runs as root which isn't recommended anyway. The sane-pnm
          backend is disabled by default. If you want to use it,
          enable it with configure (see configure --help for details).
          Be sure that only trusted users can access the sane-pnm
          backend over saned(8).

     AUTHOR

     Page 1                       Plan 9             (printed 5/26/22)

     sane-pnm(5)               (14 Jul 2008)               sane-pnm(5)

          Andreas Beck, Gordon Matzigkeit, and David Mosberger

     SEE ALSO
          sane(7), saned(8)

     Page 2                       Plan 9             (printed 5/26/22)