When it comes to pdf file viewer, neither xpdf or gpdf can match acrobat, at least in the way I use pdf files. Acrobat reader has features like search, directory, etc.

Acrobat reader does have a linux version provided on Adobe's official download page. However, under Fedora core1 does not work and instead errors out like this:

Warning: charset "UTF-8" not supported, using "ISO8859-1"
Arborted

After a few google searches, I found this page really helpful:

OpenOU: Acroread and Fedora Core 1

"Essentially, acroread expects the LANG environment variable to be C, whereas Fedora (and RH9) now set it to en_GB.UTF-8."

This page gives a modified /usr/local/Acrobat5/bin/acroread file which resolves this conflict. So far, it works with no problem under Fedora core1 on my machine.

Pdf file reader is one of the few disadvanteges of linux, although generating pdf file is much easier (for example, OpenOffice can diractly save to pdf format).