redhat man page for sane-pnm

sane-pnm(5)							File Formats Manual						       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 primarly to aid in debugging  of  SANE  fron-
       tends.  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/sane/libsane-pnm.a
	      The static library implementing this backend.

       /usr/lib/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 pnm backend is installed and saned 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 can access (usually it's running as user "sane"). All pnm files can be read if saned
       runs as root which isn't recommended anyway. The 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 pnm backend over saned.

AUTHOR
       Andreas Beck, Gordon Matzigkeit, and David Mosberger

SEE ALSO
       sane(7)

								   22 April 2001						       sane-pnm(5)