About : We all have complex pages with several overlays that appear based on selections from several drop down menus and by on-click functionalitys,

Our goal is to limit the user to only be able to tab through the elements on the overlay (above positioned lightbox div) via the keyboard.

In ...

Short version for index and feeds

To allow clients to ssh using port knocking

@server : 192.168.1.181

# download knockd rpm from web and install
# rpm -ivh knockd-5.xx.rpm
# rpm -qip knockd-5.xx.rpm - know about the packge
# rpm -ql knockd - to list what are files have installed for knockd

First need to reject ...

About sass : Sass is an extension of CSS that adds power and elegance to the basic language. It allows you to use variables, nested rules, mixins, inline imports, and more, all with a fully CSS-compatible syntax. Sass helps keep large stylesheets well-organized, and get small stylesheets up and running quickly ...

The PayPal REST APIs are supported in two environments. Use the Sandbox environment for testing purposes, then move to the live environment for production processing.

The following endpoints address are two environments:

Sandbox (for testing) : https://api.sandbox.paypal.com
Live (production) : https://api.paypal.com

A complete REST operation ...

PGP tutorial

Websocket, a technology to support modern web applications.

First take one system of centos or ubuntu which ever you like. Make sure have the seperate partitions for LFS and swap which we are going to use fo LFS. Login to the system and create 2 partitions

For Exapmle:
fdisk /dev/sda
n
enter
+8G
w
# partprobe

Follow same ...