GNU screen commands(Cheat Sheet)

GNU Screen is a terminal multiplexer, a software application that can be used to multiplex several virtual consoles, allowing a user to access multiple separate login sessions inside a single terminal window, or detach and reattach sessions from a terminal. It is useful for dealing with multiple programs from a command line interface, and for separating programs from the session of the Unix shell that started the program, particularly so a remote process continues running even when the user is disconnected. more ...

January 8, 2018 · 1 min · Veerendra K

Install jekyll in Ubuntu 14.04

👉 Update on 27-08-2022 Moving to Hugo and other updates! I was very excited to try Jekyll and Github Pages when I heard about it. When I try to install jekyll, I got below error root@veeru:/home/veeru# gem install jekyll bundler Fetching: public_suffix-3.0.1.gem (100%) ERROR: Error installing jekyll: public_suffix requires Ruby version >= 2.1. Fetching: bundler-1.16.1.gem (100%) Successfully installed bundler-1.16.1 1 gem installed Installing ri documentation for bundler-1.16.1... Installing RDoc documentation for bundler-1.16.1... I don’t even know what that means(I’m not a Ruby guy, so..). Clearly jekyll needs more than Ruby version 2.1, but in Ubuntu 14.04 if you type apt-get install ruby -y you will end up having Ruby 1.9. So let’s install Ruby 2.4 like below ...

January 7, 2018 · 1 min · Veerendra K

MAC Address Scrambling in Linux

“MAC Address Scrambling“- By the name itself we can understand, instead of using a burned-in address, the machine uses a random MAC address. The machine/device changes MAC addresses regularly to improve security. MAC address is a 48-bit hexadecimal digit which is burned in every electronic device that has the capability of “connectivity” such as mobile devices, smart TV, PC, etc. “Apple” added this feature to iPhones from iOS8 to protect users’ privacy. ...

January 6, 2018 · 3 min · Veerendra K