How to merge many PDF files into a single one? [duplicate]

Question

I have 16 pdfs that I want to convert into a single one... I am on Ubuntu 10.10, how can I do it?

Answer 1

First, get Pdftk:

sudo apt-get install pdftk 

Now, as shown on example page, use

pdftk 1.pdf 2.pdf 3.pdf cat output 123.pdf 

for merging pdf files into one.