cat ....various log files from your /var/log or /var/adm directories... > /usr/local/etc/prngd/prngd-seed 

such as 

cat syslog messages > /usr/local/etc/prngd/prngd-seed 

Then run 

mkdir /var/spool/prngd

/usr/local/sbin/prngd /var/spool/prngd/pool 

This should start up the prngd daemon and start generating entropy. You can check this by running

/usr/local/bin/egc.pl /var/spool/prngd/pool get 

which, if the egd package (see README.egd) is installed along with perl, will give a message like

32800 bits of entropy in pool 

indicating that the prngd is working. 

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