Notes on setting up an ubuntu box

I keep having to do this all the time.
And all the time I need to look on the net for stuff I remember I need to do but can not remember exact command line

apt-get install g++ build-essential

apt-cache search XXXX

Setting of multiple IP addresses on one network card.

sudo ifconfig eth0:0 192.168.1.11 up
what is commonly know as ethernet alias

Setting up ssh to be used with secure keys so password is not needed.
http://polishlinux.org/apps/ssh-tricks/