phpman > man > pnminvert(1)

Che Dong

Invert a PNM image.

Invert the colors or greyscale values in a PNM image
pnminvert {{path/to/input.pnm}} > {{path/to/output.pnm}}

pnminvert(1)                           General Commands Manual                          pnminvert(1)



NAME
       pnminvert - invert a portable anymap

SYNOPSIS
       pnminvert [pnmfile]

DESCRIPTION
       Reads  a portable anymap as input.  Inverts it black for white and produces a portable anymap
       as output.

SEE ALSO
       pnm(5)

AUTHOR
       Copyright (C) 1989 by Jef Poskanzer.



                                           08 August 1989                               pnminvert(1)

Generated by phpman v3.7.12 Author: Che Dong Under GNU General Public License
2026-06-13 15:36 @216.73.217.134
CrawledBy Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)