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• To switch to a text environment on a Linux laptop you can press Ctrl+Alt+F1 which will give you a basic virtual terminal you may even compare this to a DOS command prompt if you have spent any time at the Windows command line for example.

  
  

  It is a nice option that the mini laptops like the Asus Eee PC offer the Linux operating system instead of Windows mainly because this means a substantial cost savings. It basically boils down to the fact that with the Linux GUI (graphical User Interface) you simply use email and Internet apps just as you would Windows based apps. You have your email icon, your documents icon, etc. This is very basic of course but most people do not go too far into the operating system anyway they just use the basics.

• New Linux laptops and even older laptops running the Linux operating system provide a way to use the shell for telling the computer what to do. The shell is very much not a graphical environment yet it is a command line approach allowing the user to very quickly and efficiently communicate with the computer.

  
  

  It can be a lot of fun making cheap Linux laptops by installing this operating system on slightly older laptop computers. The default shell in Linux is the bash shell and this is actually based on the original Unix shell. The name bash actually is a compilation of the Unix Bourne shell and again shell as "Bourne again shell" becomes the word bash.

  
  

  The CPU (Central Processing Unit) uses a clock frequency which determines how fast the CPU processes instructions. Each tick of the clock represents the execution of an instruction so the faster the ticking the faster the instructions get processed. This clock frequency is measured in Megahertz (MHz) and this has been standard for a very long time on single core processors.

  
  

  The CPU is actually the brain of the computer as this is the component which actually directs and processes the instructions which are given to the system. This holds true for the applications you run including everything from checking your email to starting the operating system in the morning.

  
  

  In Linux the ps command will list the currently running processes. If you add additional arguments you can fine tune the results. For example ps –u will display all of the running processes for a particular user. Let’s say you wanted to see all of the running processes for the user root you could just type ps –u root. The ps –f command will show more of a detailed list of processes and the ps –ef will show all of the processes with the full listing format.

  
  

  The Linux operating system is constantly running many processes which can be simultaneously processed by the CPU as they will not interfere with one another. Processes use various system resources such as memory and the file system. The file system controls access to files and allocates temporary storage for the processes while the system memory holds the process and any data which happens to be running.

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