trueos/trueos — pull request #1 by rodrigc (2013-05-13 18:28:51+00:00)
Title: On the FreeNAS installation ISO image, /rescue

is the directory which contains all the executables which run
from the shell. /usr/bin , /usr/sbin, /sbin , /bin are all symlinks
to /rescue. To add a new executable to the ISO image, you
need to add it to /rescue.

Add /rescue/less to the ISO, and add /rescue/more as a link to /rescue/less.