an overview of unix l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
An Overview of Unix PowerPoint Presentation
Download Presentation
An Overview of Unix

Loading in 2 Seconds...

play fullscreen
1 / 9

An Overview of Unix - PowerPoint PPT Presentation


  • 180 Views
  • Uploaded on

An Overview of Unix. What is an operating system, and why would someone want Unix as their OS?. An operating system is low-level software that allows the computer hardware to be used by people and applications.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'An Overview of Unix' - gisela


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
what is an operating system and why would someone want unix as their os
What is an operating system, and why would someone want Unix as their OS?

An operating system is low-level software that allows the computer hardware to be used by people and applications.

One would choose Unix if the applications they wanted to use were supported by Unix and/or if any of the following features were desired:

  • multiuser/multitasking capabilities
  • reliability and robustness
  • security
  • scalability
  • ability to run on variety of hardware platforms
  • the power and flexibility of Unix commands
  • Government and University markets
name four functions of an operating system
Name four functions of an operating system
  • Hardware control
  • User Interfaces
  • Resource management
  • Provide a platform for applications
  • Input/output processing
  • System monitoring
  • Communications
what are the three major components of a unix operating system
What are the three major components of a Unix operating system
  • The Shell (user interface)
  • System Commands (defines unix)
  • Kernel (implements unix)
name three types of user interfaces offered by unix linux systems
Name three types of user interfaces offered by UNIX/Linux systems
  • Command line interfaces e.g. sh, csh, ksh, bash
  • Menuing shells e.g. linuxconf, scoadmin, sami
  • Graphical Desktop e.g. Gnome, CDE, KDE, ODT
what three pieces of information are required to logon to a unix system
What three pieces of information are required to logon to a Unix system?
  • Login name
  • Password
  • Terminal type (may be preconfigured)
what is meant by a login session how many can you have on a unix computer
What is meant by a login session?How many can you have on a UNIX computer?
  • A login session is a shell process connected to a unique tty device.
  • UNIX: virtually unlimited
when and how do you log off of a unix system
When and how do you log off of a Unix system?
  • Log off whenever you are about to leave your session unattended.
  • Use the exit command to terminate your shell and log off.
what are the characteristics of a good password
What are the characteristics of a good password?
  • Uses a range or character types:(alpha, numeric, punctuation…)
  • The longer the better,(minimum of 7 characters)
  • Memorable
  • It’s kept secret
  • It is changed if compromised

Examples:

Wh0le #! Id102$da KuKu4(co)2 $nack@ack #0p&S@ve