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  (-left-
       right  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 pre-
       fix.

SEE ALSO
       pnmrotate(1) pnm(5) 

AUTHOR
       Copyright (C) 1989 by Jef Poskanzer.