Regarding pdf

[ladduq]

Hi

I need some help regarding PDF

can we convert pdf to .txt or .doc format using batch program.

or

can we search for a string in a pdf document and display that whole line
in to a separate text document or pdf or .doc

say we have below few lines in pdf and search string is john

1 how are u john
2 how are u smith
3 how are u allen
4 how are u john
5 how are u smith
6 how are u allen

the expected output is


start
===================
1 how are u john
===================
6 how are u john
===================
end

[Squashman]

Not without some 3rd party software.