COMP 325 Lecture Notes - Root Directory, Man Page, Institute For Operations Research And The Management Sciences
1 Jul 2018
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Comp325 – unit 1
Key Terms:
Command Interpreter
A program that starts running after you log on to allow you to type commands that it tries to
interpret and run. In UNIX, the command interpreter is also known as a shell.
primary purpose of the shell is to interpret your commands, it is also known as the UNIX
command interpreter.
File System Structure
The structure that shows how files and directories in a computer system are organized.
On most contemporary systems, the files and directories are organized in a hierarchical
(tree-like) fashion.
Search Path
A list of directories that your shell searches to find the location of the executable file
(binary or shell script) to be executed when you type an external command at the shell
prompt and hit the <Enter> key
Pseudonym ( Also called aliases)
Also known as an alias, a nickname given to a command or e-mail address.
Shell Metacharacters
Most of the characters other than letters and digits have special meaning to a shell and
are known as shell metacharacters. They are treated specially, and therefore cannot be
used in shell commands as literal characters without specifying them in a particular
way.
Unit 2 –
Key Terms
character-driven operating system OR
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Text-Driven Operating System
An operating system that takes commands to be executed from the keyboard.
Text Editor
A text editor allows you to view and edit (add or delete text in) text files. In spite of all
that jazz created by word processors and desktop publishing systems, text files remain
the most critical part of computing. They are needed to store source programs written in
any type of language (e.g., C, C++, Java, Assembly, and Perl), e-mail messages, test
data, and program outputs.
line editor,
screen editor,
Keystroke Command
A command executed buy pressing one or more keys.
citation for accuracy before use.
text buffer also called main buffer
Main Buffer
Also known as the editing buffer, or the work buffer, it is the main repository for the
body of text that you are trying to create or modify from some previous permanently
archived file on disk.
UNIT 3-
Key Terms
Mail program:
For our purposes, there are three categories of e-mail systems for UNIX. The mail
program in Section 6.2 is a line display e-mail system, which means that you can only edit
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find more resources at oneclass.com
Document Summary
A program that starts running after you log on to allow you to type commands that it tries to interpret and run. In unix, the command interpreter is also known as a shell. primary purpose of the shell is to interpret your commands, it is also known as the unix command interpreter. The structure that shows how files and directories in a computer system are organized. On most contemporary systems, the files and directories are organized in a hierarchical (tree-like) fashion. A list of directories that your shell searches to find the location of the executable file (binary or shell script) to be executed when you type an external command at the shell prompt and hit the key. Also known as an alias, a nickname given to a command or e-mail address. Most of the characters other than letters and digits have special meaning to a shell and are known as shell metacharacters.
