DOS

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DOS Disk Operating System

• Chen Fuh-Gwo

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Outline

• What is DOS?
• DOS Command Categories
• Internal commands
• External commands
• Internal commands
• External commands
• Command Advantages

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What is DOS?

• A shell between OS and Users
• A set of commands to talk to the underlying OS
• A lot of windows utilities for the system
  maintain is based on DOS commands. It only has a
  windows look for the friendly usage.

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DOS Commands

• Internal
• dir
• copy
• cd
• etc.
• External
• diskcopy.com
• more.com
• xcopy.exe
• notepad.exe (Based on Windows)
• Batch files (.bat)

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Text-Based Command Advantages

• Can use a batch file to create a sequence of
  actions
• Bulk users creation
• Shell programming
• VB Script
• Perl
• Can be automatic by the scheduler
• Used for the system maintain jobs
• Backup
• File system check