A shell is an interactive user interface to an operating system services that allows an user to enter commands as character strings or through a graphical user interface. The shell converts them to system calls to the OS or forks off a process to execute the command. System call results and other information from the OS are presented to the user through an interactive interface. Commonly used shells are sh,csh,ks etc.
Pharaoh is the common title of the monarchs of ancient Egypt.
The Pharaoh in ancient Egypt was the political and religious leader of the people and held the titles 'Lord of the Two Lands' and 'High Priest of Every Temple'.
It develops in a region of moderate rainfall and limited evaporation. It is agriculturally a poor soil but addition of lime and fertilizers would yield favourable results. Found extensively in northern Canada and northern Russia.