merge / convert multiple pdf files into one pdf

Question

How could I merge / convert multiple pdf files into one large pdf file?

I tried the following, but the content of the target file was not as expected:

convert file1.pdf file2.pdf merged.pdf

I need a very simple/basic cli solution. Best would be if I could pipe the output of the merge / convert straight into pdf2ps ( as originally attempted in my previously asked question here: http://stackoverflow.com/questions/2507596/linux-piping-convert-pdf2ps-lp ).

Answer 1

I'm sorry, I managed to find the answer myself using google and a bit of luck : )

For those interested;

I installed the pdftk (pdf toolkit) on our debian server, and using the following command I achieved desired output:

pdftk file1.pdf file2.pdf cat output -

This in turn can be piped directly into pdf2ps.