IT 244: Introduction to Linux/Unix
Class 12

Today's Topics


New Material

Reading Assignment

The reading assignment for this week is chapter 5 of Sobell, The Shell.

Homework 6

I have posted homework 6 here.

It is due this coming Sunday at 11:59 PM.


The mid-term exam for this course will be held on Tuesday, October 23rd.

It will consist of 25 questions like those on the quizzes.

You will have the entire class period to work on the exam.

60% of the questions will come from the Ungraded Class Quizzes.

The last class before the exam, Thursday, October 18th, will be a review session.

You will only be responsible for the material in the Class Notes for that class on the exam.

The Mid-term is a closed book exam.


Syntax of the Command Line

Command Options

Device Drivers


The Unix tty Device Driver

Parsing the Command Line

The PATH System Variable

Running a Program in the Current Directory

Running the Command Entered on the Command Line

New Material

Using Computers More Efficiently

Computers are Fast But People are Slow

The Birth of Unix

Data Streams


Unix Devices Are Files

The Monitor and Keyboard

ssh and Pseudo-terminals

Standard Input, Standard Output and Standard Error

The Keyboard and Screen as Standard Input and Standard Output


Redirecting Standard Output

Redirecting Standard Input

Redirecting Standard Output Can Destroy a File

Adding Output to an Existing File



Graded Quiz