Operating systems

Operating systems

1. ·

   • GUI
     • Graphical representations of the computer’s functions are shown to the user and controlled by touchscreen or a mouse and keyboard
     • A GUI is used by most PC and phone operating systems
     • Programs often run in windows and several can be shown at the same time
   • CLI
     • The user types commands, and the result is shown as text
     • These are harder to use, but are very lightweight and robust – they use few system resources and are very unlikely to crash or break
     • Nearly every operating system provides a CLI
     • A CLI is a text-based interface

2. GUI vs CLI

   • Coping a file
     • GUI
       • Open a window and navigate to the folder containing the file
         • Open another window and navigate to the new location
           • Drag the file from the first location to the new one, or use the context menus to choose copy and paste
     • CLI
       • Type the command
   • Viewing the contents of a folder
     • CLI
       • Type the command
         • The folder contents is show as text
     • GUI
       • Open File Explorer and navigate to the folder
         • The folder contents is shown as icons

3. File Management

   • Files need to be manipulated
     • Operating systems provide an interface to the user which allows them to
       • Sort files
       • Search for files
       • Delete files
       • Move files
       • Copy files