Pamfile User Manual(0) Pamfile User Manual(0)NAMEpamfile - describe a Netpbm (PAM or PNM) file
SYNOPSISpamfile
[-allimages] [-count] [-comments]
[file ...]
Minimum unique abbreviations of options are acceptable. You may use
double hyphens instead of single hyphen to denote options. You may use
white space in place of the equals sign to separate an option name from
its value.
DESCRIPTION
This program is part of Netpbm(1)pamfile reads one or more Netpbm files as input and writes out short
descriptions of the image type, size, etc. This is partly for use in
shell scripts, so the format is not particularly pretty.
By default, pamfile reads only the header of the input file. If that
file is a pipe, that might cause problems for the process that is feed‐
ing the pipe. In that case, see the -allimages option.
OPTIONS-allimages
This option causes pamfile to describe every image in each input
file. Without this option, pamfile describes only the first
image in each input file.
This option also causes pamfile to read all the images from the
input stream, whereas without it, pamfile reads only the header
of the first one. If the input stream is from a pipe, the
process that is feeding the pipe might require the entire stream
to be consumed. In that case, use this option even if the
stream contains only one image.
This option has no effect if you also specify -count.
Note that before July 2000, a file could not contain more than
one image and many programs ignore all but the first.
This option was new in Netpbm 9.5 (July 2000).
-comments
This option causes pamfile to include for each PAM image a
report of the comments from the header of the image.
For a PBM, PGM, or PPM image, pamfile reports there are no com‐
ments, even if there are.
This option was new in Netpbm 10.35 (August 2006).
-count This option causes pamfile to display only a count of how many
images are in each input file.
As with -allimages, this causes pamfile to read all the images.
This option was new with Netpbm 10.31 (December 2005).
SEE ALSOpam(1) , ppmhist(1) , file
AUTHOR
Copyright (C) 1991 by Jef Poskanzer.
netpbm documentation 11 July 2006; Pamfile User Manual(0)