Convert .odt .doc .ods files to .txt files

Question

I want to convert all the .odt .doc .xls .pdf files to .txt files.

I want to convert these files to text

Answer 1

$ unoconv --format=txt document1.odt

Should produce document1.txt.

Answer 2

OpenOffice has a built-in document converter capable of handling a bunch of formats- take a look at unoconv: http://dag.wieers.com/home-made/unoconv/

That being said, I have had some troubles getting that to work in the past- If you're having trouble, take a look at similar programs for AbiWord (another open source word processor).