If you hate using acrobat to just simple pdf editing work, such as joining multiple files or splitting one file to many single page files, you should consider about this powerful script– join.py.
It’s a NATIVE script if you are using Mac OS X (mine is 10.4). The location is:
/System/Library/Automator/Combine PDF pages.action/Contents/Resources/join.py
or you can download from:
It’s a command script, no window interface required. I made a soft linking by adding an alias in tcsh, so I just call join.py not the full path/join.py, that will be very convenient.
BUT, there are some FREE “graphical user interface” front-ends, you can search by google; the popular one is PDF joiner (http://qetipadgu.org/software/).
join: join.py -o output.pdf input_1.pdf input_2.pdf …
split: join.py source.pdf output1.pdf output2.pdf