IT 244: Introduction to Linux/Unix
Class 13, Tuesday

Today's Topics

Tips and Examples


Review


New Material

Reading Assignment

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

Homework 5

I have posted homework 5 here.

It is not due this coming Sunday.

Instead is due on the Sunday of the following week, July 8th.

This is to allow you time this weekend to study for the mid-term.

Mid-term

The mid-term exam for this course will be held on Monday, July 2nd.

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, June 28th, 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.

Today's New Material Not on Mid-term

The new material in today's class will not appear on the Mid-term.

You will only be responsible for the material in the Class Notes for the next class.

They will cover Class Notes 2 through 12.

Tips and Examples

Using chmod Twice to Change Permissions

Pipes and Redirection

Priting from Pipes

Review

Computers are Fast But People are Slow

The Birth of Unix

Data Streams

Devices

Unix Devices Are Files

The Monitor and Keyboard

Standard Input, Standard Output and Standard Error

The Keyboard and Screen as Standard Input and Standard Output

Redirection

Redirecting Standard Output

Redirecting Standard Input

Redirecting Standard Output Can Destroy a File

Adding Output to an Existing File

/dev/null

New Material

Running a Command in the Background

Jobs

Moving a Job from the Foreground into the Background

Aborting a Background Job

Attendance

Class Quiz