1Pamfile User Manual(0) Pamfile User Manual(0)
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6 pamfile - describe a Netpbm (PAM or PNM) file
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10 pamfile
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12 [-allimages] [-count] [-comments]
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14 [file ...]
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16 Minimum unique abbreviations of options are acceptable. You may use
17 double hyphens instead of single hyphen to denote options. You may use
18 white space in place of the equals sign to separate an option name from
19 its value.
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23 This program is part of Netpbm(1).
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25 pamfile reads one or more Netpbm files as input and writes out short
26 descriptions of the image type, size, etc. This is partly for use in
27 shell scripts, so the format is not particularly pretty.
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29 By default, pamfile reads only the header of the input file. If that
30 file is a pipe, that might cause problems for the process that is feed‐
31 ing the pipe. In that case, see the -allimages option.
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35 -allimages
36 This option causes pamfile to describe every image in each input
37 file. Without this option, pamfile describes only the first
38 image in each input file.
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40 This option also causes pamfile to read all the images from the
41 input stream, whereas without it, pamfile reads only the header
42 of the first one. If the input stream is from a pipe, the
43 process that is feeding the pipe might require the entire stream
44 to be consumed. In that case, use this option even if the
45 stream contains only one image.
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47 This option has no effect if you also specify -count.
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49 Note that before July 2000, a file could not contain more than
50 one image and many programs ignore all but the first.
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52 This option was new in Netpbm 9.5 (July 2000).
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55 -comments
56 This option causes pamfile to include for each PAM image a
57 report of the comments from the header of the image.
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59 For a PBM, PGM, or PPM image, pamfile reports there are no com‐
60 ments, even if there are.
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62 This option was new in Netpbm 10.35 (August 2006).
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65 -count This option causes pamfile to display only a count of how many
66 images are in each input file.
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68 As with -allimages, this causes pamfile to read all the images.
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70 This option was new with Netpbm 10.31 (December 2005).
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76 pam(1), ppmhist(1), file
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80 Copyright (C) 1991 by Jef Poskanzer.
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84netpbm documentation 11 July 2006; Pamfile User Manual(0)