convert .msg files from Outlook to a format readable on linux with a text editor

How to convert .msg files from Outlook to a format readable on linux with a text editor:

from http://www.matijs.net/software/msgconv/

cpanm Email::Outlook::Message

or

cpan -i Email::Outlook::Message

or on Debian and derivatives such as Ubuntu:

apt-get install libemail-outlook-message-perl

then

msgconv my_unreadable_binary_file.msg
less my_unreadable_binary_file.eml