Imposing a pdf/postscript on top of another one

[Antonio Olivares]

Dear FreeBSD users,

Using only commands like psmerge, psnup, from psutils and a customized
script with awk or sed is it possible to force a picture created using
gnuplot as the background and impose a ps/pdf document created by tex/latex
on top of it.  No other packages/programs like background package in latex,
or pdftk, are available.  It is an old machine that is offline running
8.3-RELEASE amd64.
The command psmerge does not work correctly.  The files can be combined
using ghostscript, but my goal is to use a graph from gnuplot output to
postscript not eps, then process a tex file and output it to postscript
with dvips.  After this is done have a script that sets the postscript file
from gnuplot as the background and puts the one created by dvips on top of
that one.  The postscript from gnuplot is fixed with fixbb and removes
unnessary space, the other file postscript file is in letter format.
Ideas, suggestions, advice are appreciated.

Best Regards,


Antonio