Wednesday, June 15, 2016

Quirky Things You Didn’t Know The Linux Terminal Could Do - Terminal ආතල් ටිකක් පට්ට හොඳේ ...

හායි යාලුවනේ ඔන්න මම අද ආවේ ලිනක්ස් එකේ ටර්මිනල් එකේ දාන්න පුළුවන් පොඩි වැඩ කෑලි ටිකක් ගැන හොයාගෙන ඔයාලත් කරලා බලන්නකෝ එහෙනම්.

1) Running infinite loop in terminal:
no installation required, just type:
Yes <whatever> and press enter:

2) Running a steam locomotive in the terminal:
first install it using
sudo apt-get update
sudo apt-get install sl
then type sl and press enter 

3) We begin with one of the most eye-catching trick of the list, the asciiviewer. With this tool, you can convert and generate an image out of pure text.
For Installation type: sudo apt-get install aview
To Run Command type:  asciiview name_of_file -driver curses

4) Aafire
Ideally, I wouldn’t recommend you to sit back and watch as your screen burns but how about watching fire inside your Linux Terminal? Seems absurd? Well, wait till you use the aafire command.
For Installation type: sudo apt-get install libaa-bin
To Run Command Type: aafire

5) bb
Put on your headphones and brace yourselves for an entirely text based animation that I am sure will leave you awestruck with your jaws hanging.
For Installation type: sudo apt-get install bb
To Run Command type: bb

6) Cal
Use this command to view the calendar inside the Linux terminal. Check out the man page of the cal command (by using the command: man cal) to know about the other options available to customize the output of the command.
To Run Command Type: cal

7) Cmatrix
Remember the ground-breaking sci-fi movie ‘The Matrix’? Ever wished to waltz through the Matrix itself? Well, if so, then the cmatrix is definitely ‘The One’ you are looking for:
For Installation Type:  sudo apt-get install cmatrix
To Run Command Type: cmatrix

8) Cowsay
Get an ASCII cow in the terminal that says whatever you want it to say.
For Installation Type: sudo apt-get install cowsay
To Run Type: cowsay “Message_That_You_Wish”

9) The cowsay command can be implemented in the following ways as well:

The cowsay command can also be used with following by just replacing the -f parameter with any of the following:

10) Xcowsay
Inspired by the original cowsay, the xcowsay does the same things as cowsay but in a graphical manner.
For Installation Type: sudo apt-get install xcowsay
To Run Type: xcowsay “Desired_Text”

ඔයාලත් මේ පොස්ට් එකට කැමති නම් අපිට මෙතනින් ගිහින් පොඩි Support එකක් දෙන්න ඈ...

Tuesday, June 14, 2016

Basic Linux Commands

we find ourselves pondering over the Basic Linux Commands which one must be aware of, as a beginner!

The ls command is used to list the contents of the directory (just in case you are getting confused: a directory can be considered as being analogous to a folder of Windows). You will be using the ls command to gain information about the files and directories.

As I mentioned above, we can add certain options to a Linux command in order to make it do a little bit of extra work. Here’s is how it happens:

cd [dir]
The ‘cd‘ command is used to change the current directory i.e we use this command to switch over to some other directory whose contents we might want to view or perform particular operations upon. It is basically used for navigation purposes. Using this command changes the current directory to ‘dir’. If you simply use the cd command without specifying the directory, it changes the current directory to the home directory.

The pwd command is used to display the name of the current working directory. In case you are unaware about it, use the pwd command to determine the directory that you are currently placed in.

cat [file]
The cat command concatenates and display files. This command is used to display the contents of the file mentioned along with the command.

echo [argument]
The echo command is one of the most commonly used Linux commands and is used to display the argument mentioned in the command on the screen. It basically displays a line of text/string on standard output or a file.

Sometimes while using the Terminal, there is a tendency for things to get cluttered. There could be too much information on the screen or you might, no longer require the data being displayed. In such cases,we use the clear command to (no prizes for guessing) clear the screen and get rid of the contents of the screen.

As the name suggests, the exit command is used to exit the shell or your current session.

man command
One of the Linux commands that would come to your rescue when things get sticky is the man command. The man command displays the online manual for the ‘command’ specified along with the word man. It is sort of like the help menu. You can get information about any of the command, its function, the options associated with it etc. By using the man command:

This documentation provided for any Linux command by the man command is called ‘man pages’.

Here are some more Linux commands that you should know:

rm: This command removes files and directories.

cp: This command copies files and directories.

mv: This command moves files and folders between directories.

mkdir: This command makes a new folder in your working directory.

cal: This command shows calendar on you Terminal.

nano: This command is a command line text editor.

sudo: This command gives you the super user privileges.

If you are willing to learn more about Linux command line tools related to various system processes, hardware, users, network etc. here’s a useful cheatsheet.

There are hundreds of Linux commands out there. But, I would advise you to first try out these commands on your own system and gather a basic idea of how they work. You could also refer to the man pages of each command in order to gain more knowledge about them. We shall keep discussing these commands in greater detail in upcoming articles.

ඔයාලත් මේ පොස්ට් එකට කැමති නම් අපිට මෙතනින් ගිහින් පොඩි Support එකක් දෙන්න ඈ...

Monday, June 13, 2016

රජ වෙන්න නොවේ මේ වෑයම ජය ගන්න "Buy by MiCrSoFt Bye LinkedIn"

හායි යාලුවනේ ඔන්න මම දැන් ආයෙමත් ආවේ අලුත්ම නිවුස් එකක් හොයාගෙන. අපි හැමෝම දාන්න මයික්‍රොසොෆ්ට් එක ඔන්න LinkedIn  එකත් මිලට අරගෙන . ඒ කියන්නේ ලෝකේ තියන තවත් ජනප්‍රිය සමාජ ජාලයක් අපි බලමුකෝ මෙයාලා මොකටද එන්න හදන්නේ කියලා. මෙයාලා මේක අරං තියෙන්නේ $ බිලියන 26.2 කට හිත ගන්න පුළුවන්නේ. හරි එහෙනම් මෙන්න තවත් විස්තර මෙතන තියනවා.

Microsoft CEO Satya Nadella explained that the acquisition will have a huge benefit for the firm.

“The LinkedIn team has grown a fantastic business centred on connecting the world’s professionals,” he said.

“Together we can accelerate the growth of LinkedIn, as well as Microsoft Office 365 and Dynamics, as we seek to empower every person and organisation on the planet.”

මෙන්න මේකේ තවත් විස්තර වීඩියෝ එකක් ...

ඔයාලත් මේ පොස්ට් එකට කැමති නම් අපිට මෙතනින් ගිහින් පොඩි Support එකක් දෙන්න ඈ...

අලුත්ම නිල් දත හෙට අනිද්දා නෙවෙයි ඉන් අනිද්දා - BLUETOOTH 5

හායි යාලුවනේ ඔන්න මම අද ආවේ අලුත්ම නිවුස් එකක් අරගෙන ඒ තමයි අපි හැමෝම දැනට භාවිතා කරන ඉක්මනින්ම නැති වෙලා යන්න ඉඩ තියන නිල්දත් එහෙමත් නැත්නම් BLUETOOTH ගැන අලුත්ම නිවුස් එකක් ගැන කියන්න.

ඉතින් ඒ තමයි අපි දැනට භාවිතා කරන්නේ BLUETOOTH 4 වෙනුවට ඔන්න එයාලගේ අලුත්ම එක BLUETOOTH 5 මේ සතියේ එලියට දානවලු. ඉතින් BLUETOOTH නැති වෙන්නේ නැති වෙයි මොන විදියකින් හරි අපිට ආයෙමත් මේක ඕන වෙයි. එහෙනම් මෙන්න මේ ගැන මෙයාලා කියන්නේ මේ විදියට.

Making Bluetooth communication much faster, the Bluetooth Special Interest Group is releasing Bluetooth 5 next week. This new standard will make Bluetooth four times the present range and twice as fast as the current speed.

Mark Powell මේ ගැන කියනෙන් මෙන්න මෙහෙම කතාවක්. එක බලන්න පල්ලෙහා ලින්ක් එකට යන්න.

ඔයාලත් මේ පොස්ට් එකට කැමති නම් අපිට මෙතනින් ගිහින් පොඩි Support එකක් දෙන්න ඈ...

Saturday, May 28, 2016

What Are Different Types Of WLAN Authentication — Basics Of Networking

When a wireless network is deployed, authentication is the first thing that needs to be done before connecting it to devices. So, It is important to know the different aspects of the authentication methods. However, authentication should not be mistaken with the authorization. 

Authentication is a process by which the identity of a user is verified by using some sort of credentials. On the other hand, authorization is more like authorizing a person to use the resources. Thus, in the most of the cases, authentication precedes authorization.
As far as authentication is concerned,  there are mainly three types of WLAN authentication methods that are used today:

  • Open authentication
  • shared authentication
  • EAP (Extensible Authentication Protocol) authentication

Open Authentication:

When a wireless network is deployed, a user knows about the particular network using its Service-Set Identifier (SSID). SSID, in simple terms, can be thought of as a wireless network identifier which is continuously broadcasted by the wireless network.

If you are really interested in knowing the different SSIDs your machine can see, then type the command below:

“netsh wlan show networks

And it would look something like this:

Here, you can see a list of SSIDs as well as authentication types of those SSIDs. So, in the open authentication, if the device knows the SSID, it can directly join the network.

Shared Authentication:

The shared authentication method is more secure than the open authentication. However, the shared authentication is basically employed on the individual and small business levels. A shared key, also known as Pre-Shared Key (PSK), is shared between the two parties. When the device tries to connect to that network, it puts in the key and if that matches, then the device is allowed onto the network.

Extensible Authentication Protocol (EAP):

EAP is the last types of WLAN authentication method, but the most secure authentication process of all. That’s why EAP is also deployed at the enterprise level along with an authentication server. A user logs into the wireless network using a variety of credential options.

ඔයාලත් මේ පොස්ට් එකට කැමති නම් අපිට මෙතනින් ගිහින් පොඩි Support එකක් දෙන්න ඈ...

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