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Introduction

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Transcript

  • 1. INTRODUCTION TO UNIX(UNIPLEXED INFORMATION AND COMPUTING SYSTEM)PRESENTED BY:VINEET BHALLASHAFALI SHARMA
  • 2. WHAT IS OPERATING SYSTEM?
    IT IS A COMPUTER PROGRAM THAT MANAGES THE COMPUTER RESOURCES.
    IT IS A PROGRAM THAT ACT AS A INTERFACE BETWEEN USER AND COMPUTER HARDWARE.
  • 3. DEFINITION OF UNIX
    IT IS A COMMON OPERATING SYSTEM MADE UP OF THREE PARTS:
    1.THE KERNEL
    2.THE SHELL
    3.THE PROGRAMS
  • 4. HISTORY
    KEN THOMPSON AND DENNIS RITCHIE DEVELOP A UNIVERSAL COMPUTING SYSTEM IN WHICH COMPUTER CODE COULD BE PRODUCED AND IS PORTABLE.
  • 5. FILES AND PROCESSES
    EVERYTHING IN UNIX IS EITHER A FILE OR PROCESS.
    A PROCESS IS AN EXECUTING PROGRAM IDENTIFIED BY A UNIQUE PID (process identifier).
    A FILE IS A COLLECTION OF DATA .THEY ARE CREATED BY USERS USING TEXT EDITORS ETC.
  • 6. REDIRECTION(input ,output and pipes).
    MANY PROCESSES INITIATED BY UNIX COMMANDS:
    • WRITE to the standard output
    • 7. Take their input from the standard input.
    THE > SYMBOL
    THE >> SYMBOL
    THE | SYMBOL (PIPE).
  • 8. UNIX COMMANDS
    • date : show date and time
    • 9. man:show online documentation by program name.
    • 10. uptime: show online summary of system status.
    • 11. cat: combine files.
    • 12. diff: compare two files and show their differences.
    • 13. cd: change to new directory.
    • 14. pwd: show current directory.
  • Thanking you

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