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UNIX Fundamentals (Intro)

This course is designed for end-users, system operators and programmers who are new to the Unix environment. This class is applicable for any flavor of Unix.

Course Outline

Introduction

• Course objectives

• Course overview

• Suggested references and readings

Getting Started

• What is UNIX?

• A brief history of UNIX

• Logging in

• Logging out

• Try a few more commands

• Changing your password

• Using on-line manuals

The File System - Files

• What is a file?

• The ls command

• The cat command

• The more and pg commands

• The head and tail commands

• The cp command

• The mv command

• The rm command

• File names

The File System - Directories

• Hierarchical file system

• Pathnames

• The pwd command - print working directory

• The cd command - change directory

• The mkdir command - make directories

• The rmdir command - remove directories

• The cp command - copy files

• Two useful directory names - . and ..

Editing With vi

• What is vi?

• The vi buffering process

• Command mode and insert mode

• Modes diagram

• Getting started

• Moving the cursor around

Inserting text

• Deleting a character or line

• Undo last command

• Opening a new line

• Save your work or abort the session

• Review of vi commands

More Editing With vi

• Scrolling the buffer

• Cursor motion commands

• Delete operator - d

• Change operator - c

• Yank operator - y

• Put commands - p, P

• Searching for a pattern - /, n, N, ?

• The join command

• The file command - :f

• Edit file command - :e

• Cut and paste between files

• Read file command - :r

• Set options command

• Set options command - .exrc file

Personal Utilities

• The date utility

• The bc utility

• The expr utility

• The cal utility

• The news utility

• The id utility

• The uname utility

• The finger utility

• The script utility

• The clear utility

Text Handling Utilities

• The grep utility

• The tr utility

• The cut, paste, sort utility

• The wc utility

• The diff utility

• The lp utility

File System Security

• File & Directory permissions

File System Management Utilities

• The find utility

• The df utility

• The du utility

• Compressing files

• The ln utility

• The ulimit utility

• The tar utility

Communication Utilities

• The write and talk utilities

• The mesg utility

• Mail overview

• The mail utility

• The mailx utility

• elm - electronic mail

• Sending mail with elm

• Reading mail with elm

• Customizing elm

• elmrc example

Using the Shell

• What is a shell?

• Which shell?

• The command line

• Standard input, standard output and standard error

• Using default standard in and standard output

• I/O redirection

• Appending output of a file

• Pipes

• The tee utility

Filename Generation

• Filename generation

• The ? special character

• The * special character

• The [ ] special characters

• The ! special characters

Introduction to Shell Programming

• Shell programming objectives

• Overview

• Suggested references and reading

UNIX Processes

• What is a process?

• Process structure

• The ps utility

• Options to the ps utility

• Background commands (&)

• Killing background processes

• Redirecting the standard error

Shell Programming Concepts

• What is a shell?

• What is a shell script?

• Why use shell scripts?

Flow Control

• The exit status of commands

• Command line examples

• The test command

• The if-then-else construct

• The elif construct

• A loop example

Variables

• User created variables

• The shell environment

• The export command

• Sub-shells

• Command substitution

• Quoting mechanisms

• Assigning variables - summary

Special Variables

• Command line arguments

• $# - Number of arguments

• The shift command

• $* - All arguments

• $$ - PID of shell

More Flow Control

• The for loop

• The while loop

• The case construct