1. Operating Systems Concepts 1/e Ruth Watson Chapter 3 Chapter 3 DOS Ruth Watson

2. Operating Systems Concepts 1/e Ruth Watson Chapter 3 2 Objectives (1 of 2) Explain what DOS is Explain what GUI is Explain what a pipe is Demonstrate how to create a directory structure using DOS commands Demonstrate how to navigate a directory structure using DOS commands Demonstrate how to use the DOS edit program

3. Operating Systems Concepts 1/e Ruth Watson Chapter 3 3 Objectives (2 of 2) Explain what the 8.3 naming convention is Differentiate between copying and moving files Demonstrate how to use wildcard characters Demonstrate how to redirect output using DOS commands Demonstrate how to customize the command window interface Demonstrate how to write a batch file

4. Operating Systems Concepts 1/e Ruth Watson Chapter 3 4 Introduction Technology professionals must have a basic understanding of DOS, including:  Syntax  Paths  Switches  Command line statements  Batch files

5. Operating Systems Concepts 1/e Ruth Watson Chapter 3 5 Important Terms to Understand Backslash Batch file Clone Forward slash GUI Partition Path Prompt Redirect Root Shell or user interface Standard output Switch Syntax

6. Operating Systems Concepts 1/e Ruth Watson Chapter 3 6 What DOS is Disk Operating System (DOS) Around since the early 1980’s Command line interface There are many other command line OS’s, including:  Novell Netware  Unix  Linux  VAX/VMS

7. Operating Systems Concepts 1/e Ruth Watson Chapter 3 7 Understanding the Syntax Syntax: Rule to follow Command line help |more: Will show help options one screen at a time by using the pipe (|) Syntax: Rule to follow Command line attrib /?: Will tell you more about a command using the /? after the command name

8. Operating Systems Concepts 1/e Ruth Watson Chapter 3 8 Navigation Using DOS Start & Accessories Dir/p: Current directory path C:\ prompt:

9. Operating Systems Concepts 1/e Ruth Watson Chapter 3 9 Directory Structure

10. Operating Systems Concepts 1/e Ruth Watson Chapter 3 10 Directory Structure Continued

11. Operating Systems Concepts 1/e Ruth Watson Chapter 3 11 Using Wildcard Characters Use wildcard characters to show multiple files with same name Type tree.*  all files named tree will appear Type tree *.*  all possible files will appear Many uses for wildcards:  Copy all files tree *.*  Delete all files tree *.*

12. Operating Systems Concepts 1/e Ruth Watson Chapter 3 12 Redirecting Output Command displays the directory structure of the partition Don’t forget the pipe (|)  will show screen by screen

13. Operating Systems Concepts 1/e Ruth Watson Chapter 3 13 Command Windows Interface Change the look of the command prompt window  Right-click the command line title bar  Options: Font Layout Colors More

14. Operating Systems Concepts 1/e Ruth Watson Chapter 3 14 Batch Files Batch files contain a series of commands that a user might use often Batch files are saved with a.bat file extension For example:  Copying files and then delete  Move certain files and then delete  Create directories and then backup certain files

15. Operating Systems Concepts 1/e Ruth Watson Chapter 3 15 Batch Files Continued When the.bat file is double clicked the commands run one at a time..bat file

16. Operating Systems Concepts 1/e Ruth Watson Chapter 3 16 The True Power of DOS DOS has been around for a while  professionals still find ways to use DOS Excellent example:  The teacher creating a batch file to delete all documents placed in a class file as the computer runs Backing up files using batch files is another great example

17. Operating Systems Concepts 1/e Ruth Watson Chapter 3 17 Summary Typical computer users may never need to know DOS Technology professionals need to know DOS Understanding syntax, paths, command prompts, and batch files is a must for technology professionals

18. Operating Systems Concepts 1/e Ruth Watson Chapter 3 18 Questions?