Introduction to DOS operating systems

History of DOS

• developed by Bill Gates and Co. - 1983 (MS-DOS)
• based on many unix concepts
• many revisions (DOS 2.1, 3.3, 4.0, 6.0, etc.)

Overview

• 系統的啟動(boot), 分為
• cold boot - power off and on
• warm boot - [ctrl][alt][del]
• everything is a file
• hierarchical file structure
  uses '\' to separate sub-directories
• file specifications
• device -- c:
• directory path -- c:\courses\fortran\
• file name (1-8 chars)
• file extension (1-3 chars)
• delete character -- [del] , halt process -- ctrl-c
• command structures and switches

e.g., dir /w

Basic Commands

• directory of files -- DIR

filename wildcards -- ? and *

• directory create and navigate -- mkdir, cd, rmdir, pwd
• copy
• file rename, delete
• view parts of a file -- TYPE, along with [pause] key
• pipe to more filter for easier viewing
• many DOS versions have HELP command

  use more to demonstrate ( help | more )

• I/O redirection
• The Web-Based Guide to DOS -- a reference guide