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Demystify - Linux GUI

GUI In Linux GUI ( Graphics User Interface ) as everyone know about.  I am writing this article so that we can able to understand how to run GUI apps in containers but we need to understand how it works in linux. Why linux?   Most of the container we use are Linux based inorder run GUI in Linux we need know how it works.. Back in early days computer fill the entire room and if you want to access it you will be presented TTY (TeleType Machine) you can still see this screen if you press CTRL + ALT + F1 in Linux. ( To get back to GUI press CTRL + ALT + F7 ) Linux spin off 8 TTY when it boots ( we can configure more or less ) Graphics in linux is handled by bunch of little programs. They are Display manager Display manger which is the key component for graphics in which mainly graphics servers lie in linux the X.org is the defacto of Display manger. which has two components X Server  X Client Here little twist server talks to the client ( o...
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Vim - Text Editor which last for Decade

what's Vim?     Vim is a highly configurable text editor for efficiently creating and changing any kind of text. It is included as "vi" with most UNIX systems and with Apple OS X                                                                                                            ---> From Vim.org  when i first heard it, what a command line editor which is awesome and i said to myself  NO WAY, there are tons of editor which looks good and easy learn curve such as Atom,Sublime,VSCode and bunch others What makes vim special than other editors?  Different from everything you have used before ( because it has modes - insert mode,visual mode,Command mode ) Forget the mouse ( why?...
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codefest-ctf-18 writeup

Codefest is online CTF challenge conducted by Hackerrank on August 31 2018 6:00 PM IST to September 1 2018 12:00 PM IST. They have given dozens of challenges.  link: https://www.hackerrank.com/contests/codefest-ctf-18/challenges I manage to complete two challenges in this article i will explain how i solved the two  Typing Master Question If you think you have it in you, connect now to 34.216.132.109 9093 and prove your mettle. You will be presented with a simple typing task which is meant to check your typing speed. For example, Can you type 'Z' 10 times followed by 'u' 6 times, followed by the sum of their ASCII values? ZZZZZZZZZZuuuuuu207 Input Format Regarding input to the server - The question was designed keeping netcat in mind. Some users who are using other tools/language (eg, Python, PuTTY, TELNET) to connect to the server please note that they do not terminate the strings like netcat does. If you choose not to use netcat, t...
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