I was about to submit claims for my expenses. I had to scan the receipts and email them to blah blah blah. The scanner gave me multiple pdfs and I preferred to send only one pdf. I had to merge the pdfs and did that by using the below command in my Fedora 10 box.
# gs -dNOPAUSE -sDEVICE=pdfwrite -sOUTPUTFILE=merged.pdf -dBATCH first.pdf second.pdf
I got this solution through a search in the web.
