LAB 1

OPERATING SYSTEM : LAB 1

1. Ramli is a Windows 7 user. However, He decided to use Mac Os X. For the first time use he need to know where to get hardware information in Mac OS X ? Please brief detail step by step to help him.

      First of all Ramli need to find information about Mac OS X . This is one of the website he can search about Mac OS X.

        

After that,Ramli can find out if Mac OS is better than Windows.elow shows the difference between Windows and the Mac Os X Operating systems.

  

Beside that, Ramli also can find out which Mac OS version is the latest ones.

   After ,he knows all the information about Mac OS X and decide to use Mac OS X. Ramli can buy a new laptop which is Macbook from Apple or he can install VMware in his laptop.

2.Sabrina love Espresso, a text editor Mac OS, but she don’t know how to install the software in Mac OS.     

In order to install the Espresso,Sabrina need to go to the text editor website at https://www.espressoapp.com .Then Sabrina can click on the free trail to see if espresso is really good or not and if she finds that it satisfy all her need she can buy it for $99 so she can use it uninterrupted.

3.David is a Mac OS user likes to play angry bird. He download from internet angrybird.exe and try to install but fail. Why this happen? Any solution?

 

David can’t use the angrybird.exe that he got from the internet because the angrybird.exe is made only for specific platforms which is Windows .

But if he want to play Angry Birds on a Mac for free, he should have an Intel Mac running Mac OSX 10.5 Leopard or later. He will need a Gmail account and the Google Chrome browser installed on his Mac.

 

After that David can search Angry Birds game at Google Chrome and click install. Then,he can play the game on his Macbook.

4.Nazri is a technical officer of All Technologies SDN BHD, he suspected someone has been used his computer and he want to check whether true or not. He using windows 7 Ultimate Edition.How can you help him?

  

Nazri can check for logged events on his computer to see whether or not someone has been using his computer.

· Toggle open Windows Logs on the left panel.

· Left-Click on “System,” and then look for the right-sidebar option to “Filter Current Log.” This allows you to isolate down to specific events, event types, and times.

· In the “Logged” dropdown, select “Custom range...” and then “Events on” in the drop-down menu to narrow the search window to when you think your machine was accessed. Select OK.

· From here, you can hit OK to simply browse all events—or you can filter by specific event IDs or task categories.

5. Azam using UniMAP computer library. Suddenly, he get this error. What are he trying to do? Any idea to solve this problem?

Azam was trying to open the Windows Task Manager and the error shows up because since he is using UniMAP’s computer library it means that he does not have the permission to do open that.This problem only occurs if he is using the University’s computer and not his own as the administrator has the permission to block standard user from opening certain programs so that students can’t mess with the computer.In order to fix this problem Azam need to contact UniMAP’s librarian or Administrator in order to get the user Administrator permisson so that he can use the Windows Task Manager properly.

6. “top” is not recognized as an internal or external command, operable program or batch file.”Zafirah try to get show process on terminal but get an error message. Why this happen? How to use this command?

This error occurs because Zafirah's PATH variable is incorrectly set, or she has overwritten it elsewhere in the file, causing the order to be interpreted to have no idea where to look for top.exe;. Other commands are cmd-private, so they're easy to find, and top isn't an internal command, so it's supposed to be remembered as an external command. External commands are all on the PATH, and if they aren't found, it's because they aren't on the PATH for that specific command.

7.Iskandar is a Windows system administrator sent print screen from his computer. What are information he provided. What type of operating system that he used? What type of command line he used?

We can see from the image that Iskandar used the Get-Member command, which is only available in cmd, which is only available in the Windows operating system. We can learn about what happens behind the scenes when a computer starts up by using the get member button, which displays all of the commands that run every time we turn on our computer. In the case, the first line of the results contains one very critical piece of knowledge. The TypeName property describes the object type that was returned. A Device, in this situation. ServiceProcess is a service process. The object ServiceController was restored. This is generally abbreviated as the section of the TypeName directly after the last period; in this case, ServiceController.

8.                  Total:                   used     free    shared  buffers  cached

                         Mem:                  3822     1999   1822          0          146     1004

     -/+ buffers/cache:                 848      2973

                        Swap   :                2001         0      2001

Suhaila are Ubuntu user. However she can’t explain information given from gnome-terminal. Please brief detail about the information given.

The column headings show on the first line of the free command output. The second, called Mem, reveals details on how physical memory is used. Instead of showing information in kilobytes, the -m alternative shows it in megabytes (the default). By looking at these figures, we can see that this machine has about 4 GB of RAM, with about half of it being used. The swap space tends to be unused when we look at the Swap: line in the output. This machine has 2 GB of swap, which is half the size of the physical memory, as per a standard swap rule of thumb. A line labelled -/+ buffers/cache appears between the Mem: and Swap: row. 

9. Follow the instruction and explain the result

i) On the keyboard: Ctrl + Alt + t

ii) Type: less /proc/cpuinfo (answer with screenshots).

What is FPU and PAE

FPU: Onboard FPU (floating point support)

PAE: Physical Address Extensions (support for more than 4GB of RAM)

 10.Lisa open terminal and type “lscpu”. That actually she what to do?

lscpu gathers CPU architecture information from sysfs and /proc/cpuinfo. The command output can be optimized for parsing or for easy readability by humans.

11.“dmesg grep | -i usb”. Please brief detail about the information given.

12. Which is the core of the operating system?

 

a) Shell

b)  Kernel

c) Commands

d)  Script

The answer is B (Kernel).The kernel is generally run in an isolated area to prevent it from being tampered with by other software on the computer. The operating system kernel is very important but is just one part of the operating system