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

Today's Topics

Tips and Examples


New Material

Homework 7

I have posted homework 7 here.

It is due Sunday, March 25th, at 11:59 PM.

It is not due this coming Sunday to allow you to study for the Mid-term Exam.


The mid-term exam for this course will be held on Tuesday, March 20th.

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, March 8th, 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.

Quiz 4

I have posted the answers to Quiz 4 here.

Tips and Examples

Using chmod Twice to Change Permissions


Data Streams


Unix Devices Are Files

Multiuser Operating Systems

The Monitor and Keyboard

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


New Material

Running a Command in the Background


Moving a Job from the Foreground into the Background

Aborting a Background Job


Graded Quiz