pnmcat(1)

NAME
       pnmcat - concatenate portable anymaps

SYNOPSIS
       pnmcat   [-white|-black]  -leftright|-lr  [-jtop|-jbottom]
       pnmfile pnmfile ...
       pnmcat  [-white|-black]  -topbottom|-tb   [-jleft|-jright]
       pnmfile pnmfile ...

DESCRIPTION
       Reads portable anymaps as input.  Concatenates them either
       left to right or top to bottom, and  produces  a  portable
       anymap as output.

OPTIONS
       If the anymaps are not all the same height (left-right) or
       width (top-bottom), the smaller ones have to be  justified
       with  the largest.  By default, they get centered, but you
       can specify one side or the other  with  one  of  the  -j*
       flags.   So,  -topbottom -jleft would stack the anymaps on
       top of each other, flush with the left edge.

       The -white and -black flags specify what color to  use  to
       fill in the extra space when doing this justification.  If
       neither is specified, the program makes a guess.

       All flags can be abbreviated to their shortest unique pre-
       fix.

SEE ALSO
       pnm(5) 

AUTHOR
       Copyright (C) 1989 by Jef Poskanzer.