EECS 1019 Lecture Notes - Lecture 2: Powershell
15 Jun 2018
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EECS 1019 Lecture 2 Notes
Introduction
Implements
• The graphical interface is much harder to implement and much more demanding in its
hardware and software requirements.
• This interface works best with a powerful graphic video capability.
• It requires a lot of memory, just to store the pictures as well as to hold the programs.
• The software is complex, although visual and object-oriented languages and API services
simplify the coding of such programs.
• In contrast, the command line interface is simple and straightforward.
• It is text oriented, and input to the command interpreter can be treated as a simple
serial character stream.
• The command line interface also has more inherent flexibility and power.
• Many experienced users consider the graphical interface to be slow and clumsy.
• They prefer to type a command to get their work done.
• Arguments and operands are easy to use and to specify.
• It is easier to work with wild card commands when an operation is to be repeated many
times or when a specialized search is to take place.
• It is more difficult to combine commands or to use piping techniques using a graphical
interface.
• Even though the graphical I/O built into user programs is easy to use, the development
of graphical I/O for user programs is more difficult, and the programs are larger and
slower
• Because of the numerous details that must be handled by service routines.
• It is obviously easier to read and write a stream of text than it is to draw windows,
handle menus, and identify mouse movements and actions.
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