IT 244: Introduction to Linux/Unix
Class 11

Today's Topics

Tips and Examples


New Material

Quiz 3

Let's look at the answers to Quiz 3.

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.

Tips and Examples

Viewing Directory Permissions

Never Use . . in an Absolute Pathname

Write Permissions on a Directory

Using the ls Command

The chmod Chant

Using . When Copying a File


The root Account

Setuid and Setgid Permissions

Directory Access Permissions

Setgid Permission on Directories


New Material

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


Class Quiz