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MCT260-Operating Systems I Operating Systems I Navigating the File System.

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1 MCT260-Operating Systems I Operating Systems I Navigating the File System

2 MCT260-Operating Systems I 2 Primary Learning Objective Understand and navigate the file system

3 MCT260-Operating Systems I 3 Specific Learning Objectives Identify and define the terms associated with the file system. Understand the concept of the Full Path or MS- DOS Path Use My Computer and Explorer to navigate through a Windows file system. Navigate the directory tree using the Command Line Interface View the directory using the DIR command

4 MCT260-Operating Systems I 4 File System The features that an operating system uses for naming, organizing, storing, and tracking directories (folders) and files. For example, a hierarchical file system is one that uses directories to organize files into a tree structure. File systems have drives, root directories, sub-directories, and files

5 MCT260-Operating Systems I 5 Drives A name assigned by the operating system to all or part of the storage space on a physical disk (such as a hard disk, a floppy disk, zip disk, or CD-ROM) A hard disk drive can be partitioned to make several logical drives. Such as a D: and E: drives in addition to the C: drive The drive name includes both the letter and the colon (C:)

6 MCT260-Operating Systems I 6 Directory A special file that keeps track of a group related objects such as sub-directories and files. Also called a folder in Windows OSs The top most directory on a drive is known as the root directory which is symbolized by the \ (back slash). A directory containing sub-directories is called a parent directory.

7 MCT260-Operating Systems I 7 Files Files display different types of icons to help identify what type of file they are. Files usually have have a three (3) letter extension. See pages 57-60 in CLI Book and page 53 in XP Book Executable files (files that contain program code that the OS can load into memory (RAM) and run) have a.exe,.com or.bat extension

8 MCT260-Operating Systems I 8 The File System

9 MCT260-Operating Systems I 9 Full Path (MS-DOS Path) Windows operating systems use the full path to locate and load software. It also uses it to find and open folders and files. The notation that identifies the exact location of a file or folder (directory) on a disk. A related concept is the PATH command which tells the OS where to find executable files it requires.

10 MCT260-Operating Systems I 10 Full Path C:\Classes\MCT260\homework3.doc The full path of a file will display the drive name, the folder name(s) that identify the location of the file and the filename. The backslash after the drive name ( \ ) refers to the top-level folder known as the root directory. All of the other backslashes ( \ ) called delimiters separate the names of two related folders or a folder and the file name.

11 MCT260-Operating Systems I 11 Absolute & Relative Paths A full path that includes the backslash ( \ ) before the name of the first directory is known as an absolute path. –\Classes\MCT260\homework3.doc A relative path always starts from the current drive and directory and never begins with a backslash. It is used to identify a sub-directory or file beneath the current drive and directory. –C:\Classes>CD MCT260\homework3.doc

12 MCT260-Operating Systems I 12 Folder Options Found in the Tools menu now. In earlier OS’s, it was in the View menu. General Tab View Tab File Types

13 MCT260-Operating Systems I 13 Navigating with My Computer How information is displayed in My Computer Opening folders in their own windows vs the same window Classic vs Web style Viewing options

14 MCT260-Operating Systems I 14 Object-Oriented Operating System The newer Windows based operating system treats almost everything on the computer as an object. Hardware devices and software applications are objects, Even parts of a word processor document such as a word or sentence are objects. Objects have associated actions and properties.

15 MCT260-Operating Systems I 15 Actions and Properties Action are operations you perform on objects such as copying or renaming Properties are characteristics of an object such as size The actions and properties are displayed on short-cut or context menus Right-clicking the object will display the short-cut or context menus

16 MCT260-Operating Systems I 16 Navigating with Windows Explorer Opening Windows Explorer Folders button on My Computer Right-click Start button From Accessories on Start Menu now Windows key + E Features of the Windows Explorer window Panes. Title and address bars Expand View box + +

17 MCT260-Operating Systems I 17 Command Line Interface When viewing a directory using the DIR command you will notice that even an empty directory shows that it has two directories (One period = current directory and two periods = parent directory)

18 MCT260-Operating Systems I 18 Navigating the Directory Structure Using CLI Using the TREE command to view the directory structure Use the Change Directory (CD) command with the absolute and relative paths. Use the CD command and.. (parent directory) to move up through levels of directories Use the CD command and \ (root symbol) to change to the root directory Change the current drive

19 MCT260-Operating Systems I 19 Review Drives, root directory, sub-directories, and files Full Path (absolute or relative paths) Object-oriented operating systems Navigating the Windows file system using My Computer and Explorer Navigating the directory tree using the Command Line Interface

20 MCT260-Operating Systems I 20 In-Class Exercise Requires a blank floppy disk. This directory structure will be used homework assignments. Open Windows Explorer Expand the drive that is mapped to the Students share point on SRP6 until you open the \MCT\MCT260\Exercise directory Copy all the contents of the directory to the root directory of the A: drive Practice navigating the file system as instructed by your instructor.

21 MCT260-Operating Systems I 21 Homework Assignment Reading –Windows XP Textbook – pp 49-59 –CLI Textbook - pp. 116-117, 129-159 –Handout Lab Exercise 4: Navigating the File System Homework 3: The File System Due Date: Next Tuesday

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