A few commands and recommendation to make working with Unix on a day to day basis easier and more productive. 

The "Command Shell" keep it simple the shell is the interface to the system make it as easy and productive as possible without customisation.

The "Foreach" the simple command allows you to repeat unix commands mulitple time for each of a list of arguments.

The "Xargs" variation on the foreach theme above redirect output from one command into input in to another.

The "Terminal Clients" a simple freeware terminal client.