install.cfg and command

[Omer Faruk Sen]

Hi,

At
http://lists.freebsd.org/pipermail/freebsd-questions/2004-March/040502.htmlit
states that I can run commands while installing server like:

command="echo keyrate="fast" >> /etc/rc.conf"
system

But when I use that I get error I can't issue that command. Is there a
speacial way  to execute commands like that in install.cfg ( echo " " >>
file_on_disk_not_in_memory_filesystem   )