To combine multiple postscript files into one PDF or PS file:
To shrink multiple pages from one postscript file onto one page:gs -dNOPAUSE -sDEVICE=pdfwrite -sOUTPUTFILE=out.pdf -dBATCH file1.ps file2.ps …
gs -dNOPAUSE -sDEVICE=pswrite -sOUTPUTFILE=out.ps -dBATCH file1.ps file2.ps …
psnup -N file.ps > out.ps
Where N is 2, 4, 6, 8, etc. (not sure how high it can go).
-Oliver