ah thanks, I restarted debian, typed it correctly and it fails to start. it is looking for module mechanize. I don't know that that means but I did an apt-cache search mechanize (see below) and if one of these packages can fix the issue I have no idea which one...

[root@deb-m5v3d: ~]calibre
Traceback (most recent call last):
File "/usr/bin/calibre", line 18, in <module>
from calibre.gui2.main import main
File "/usr/lib/calibre/calibre/__init__.py", line 22, in <module>
import mechanize
ImportError: No module named mechanize


[root@deb-m5v3d: ~]apt-cache search mechanize
libhttp-recorder-perl - Record interaction with websites
libtest-www-mechanize-cgiapp-perl - Test CGI::Application apps using WWW::Mechanize
libwww-mechanize-ruby1.9 - Automate interaction with websites (Ruby 1.9)
doclifter - Convert troff to DocBook
funkload - web testing tool
libtest-www-declare-perl - declarative testing for your web app
libtest-www-mechanize-catalyst-perl - module for automated testing for Catalyst applications
libtest-www-mechanize-perl - module for testing web applications
libwww-bugzilla-perl - Perl module to manipulate a Bugzilla database
libwww-mechanize-formfiller-perl - framework to automate HTML forms
libwww-mechanize-gzip-perl - Perl module to fetch webpages with gzip-compression
libwww-mechanize-perl - module to automate interaction with websites
libwww-mechanize-ruby-doc - Documentation for libwww-mechanize-ruby
libwww-mechanize-ruby1.8 - Automate interaction with websites (Ruby 1.8)
libwww-mechanize-ruby1.9.1 - Automate interaction with websites (Ruby 1.9.1)
libwww-mechanize-ruby - Ruby library to automate interaction with websites
libwww-mechanize-shell-perl - interactive shell for WWW::Mechanize
libwww-mechanize-treebuilder-perl - Perl module integrating WWW::Mechanize and HTML::TreeBuilder
python-mechanize - stateful programmatic web browsing
[root@deb-m5v3d: ~]