What most naturally follows?

How to set paths, colors, fonts, and aliases on a unix or linux system
Remember that unix and linux are case sensitive to settings and commands.
Be precise when entering settings. The directory listing command " ls " will not work if you type " ls " or " ls ".
All commands will be listed in their correct case, even at the beginning of a sentence in this article. " unix " will be used to refer to unix or linux.