see, /etc/mailcap

Ни в каком. 
man see
NAME
       run-mailcap, see, edit, compose, print - execute programs via entries in the mailcap file

run-mailcap, see, edit, compose, print - ничего из этого.

man /etc/mailcap: application/x-java-jnlp-file;/opt/java/jre/bin/javaws %s END

sergey@teak:~$ dpkg -S /usr/bin/see         
mime-support: /usr/bin/see
sergey@teak:~$