dilluns, 30 de gener del 2017

OPERATING SYSTEMS 2/4

OPERATING SYSTEMS 2/4

How to instal a printer

Step 1: Configure Lliurex Update to automatically download driver software   

Look for a change of the device installation in Lliurex and click on the Change the installation settings of control panel devices option in the results list. 
The Device Setup Settings window appears.                                                                                                                            

Step 2: Connect your printer to your computer 

 Connect the printer to the computer using a USB cable or through its red local so that Lliurex can detect the printer during the installation of the printer driver.                           

Step 3: Install the printer driver with the Add Printer Wizard 


Select the connection type of your printer and use the wizard. Add a Lliurex printer to install the embedded print driver.                                                                                                                           

Step 4: Print and scan a document 

Try printing and scanning, depending on your printer's resources, to make sure the printer is working. If you can print and scan, the driver is installed.



How to create users?

The command useradd allows to add a user indicating as parameters the particular information to create the user in the same line of commands. The syntax is:

    
// Create user
    
Useradd [options] usernameAmong the most outstanding options we have:
    
-g: Main group that we want the user (must exist previously)
    
-d: User's home folder. Usually this is / home / username
    
-m: Create home folder if it does not exist.
    
-s: User shell. Typically it is / bin / bashExample: If you want to create a user named 'pedro' whose main group is 'teachers', whose home folder is / home / pedro and its shell is / bin / bash, execute the following command:

    
// Create a user
    
Sudo useradd -g teachers -d / home / pedro -m -s / bin / bash pedroIn this way we will have created the user Pedro and his home folder. If we do not use the -m option, the user's home folder will not be created; In which case we would have to create it manually. We will only have to set your password with the command passwd:
    
// Set the user password

    Sudo passwd pedroThen the system will ask us twice the password that we want to assign to Peter.The useradd command allows you to create many users automatically using scripts.It is recommended that the user name be lowercase and in addition to letters can also contain numbers and some sign like normal hyphens and underscores. We must remember that unix is ​​case-sensitive, that is, Pepe is different from pepe.                                                                                                                                                                                                                                                   


                                                       OS Settings in Lliurex                                                                       

1,- Language support 

2.- System update

3.- Install restrictred extras

4.- Additional controllers 


 






















dimecres, 18 de gener del 2017

OPARATING SYSTEMS 1/2

OPARATING SYSTEMS 1/2



What is oparating sistem?

An operating system (OS) is system software that manages computer hardware and software resources and provides common services for computer programs. All computer programs, excluding firmware, require an operating system to function.
Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting software for cost allocation of processor time, mass storage, printing, and other resources.

List functions of oparating systems.

1. Booting

2. Memory Management

3. Loading and Execution

4. Data security

5. Disk Management

6. Process Management

 7. Device Controlling

 8. Printing controlling

9. Providing interface