Hi there, not sure how, but the echo 1500000 > /sys/devices/system... etc command for overclocking using the power user kernel and also the cat /sys/devices... etc command for checking the freq are available by pressing up as you would to repeat the last command executed. They are there even after restarting.

This isn't a bad thing by any means, I', just wondering how I've managed to end up with these handy shortcuts?

All commands when you exit xterm properly ie type exit are saved in your profile in file
/home/user/.ash_history
You can look at which commands are presently saved by typing

vi /home/user/.ash_history

I think default is set to save something like the last 10 commands but there is a slight bug in permissions and ownership sometimes but alot seems to have been sorted out with PR 1.2.
If you want .ash_history to save all commands regardless of whether you exit cleanly or not ie just press the x. Just type into xterm

echo "trap exit SIGHUP SIGINT SIGTERM" >> /home/user/.profile

This will force it to save last commands on exit.