# pamfile

Updated: 06 August 2000
Index

## NAME

pamfile - describe a Netpbm (PAM or PNM) file

## SYNOPSIS

pamfile [-allimages] [file ...]

## DESCRIPTION

Reads one or more Netpbm files as input. Writes out short descriptions of the image type, size, etc. This is mostly 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 feeding the pipe. In that case, see the -allimages option.

## OPTIONS

-allimages
  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.

  Note that before July 2000, a file could not contain more than one image and many programs ignore all but the first.

## SEE ALSO

pam, ppmhist, file

## AUTHOR

Copyright (C) 1991 by Jef Poskanzer.

## Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
SEE ALSO
AUTHOR