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RedHat 9 (Linux i386) - man page for pnmflip (redhat section 1)

pnmflip(1)						      General Commands Manual							pnmflip(1)

NAME
pnmflip - perform one or more flip operations on a portable anymap
SYNOPSIS
pnmflip [-leftright|-lr] [-topbottom|-tb] [-transpose|-xy] [-rotate90|-r90|-ccw ] [-rotate270|-r270|-cw ] [-rotate180|-r180] [pnmfile]
DESCRIPTION
Reads a portable anymap as input. Performs one or more flip operations, in the order specified, and writes out a portable anymap.
OPTIONS
The flip operations available are: left for right (-leftright or -lr); top for bottom (-topbottom or -tb); and transposition (-transpose or -xy). In addition, some canned concatenations are available: -rotate90 or -ccw is equivalent to -transpose -topbottom; -rotate270 or -cw is equivalent to -transpose -leftright; and -rotate180 is equivalent to -leftright -topbottom. All flags can be abbreviated to their shortest unique prefix.
SEE ALSO
pnmrotate(1), pnm(5)
AUTHOR
Copyright (C) 1989 by Jef Poskanzer. 25 July 1989 pnmflip(1)