May 112020

ADM

Install and use firewalld on Ubuntu

  • 11 May 2020
  • ADM

Firewalld is one of the Linux firewall management tool and it is available on the in the Ubuntu's default repositories, therefore it is available to be installed from these repositories using the apt packaging system.

Aug 242019

ADM

How to fix apt lock-frontend error in Ubuntu

  • 24 August 2019
  • ADM

How to fix the E: Could not get lock /var/lib/dpkg/lock-frontend - open (11: Resource temporarily unavailable) error.

Jun 112018

ADM

How to change the hostname in Ubuntu

  • 11 June 2018
  • ADM

How to change hostname in Ubuntu. There are three options: temporary until the first restart and permanent by changing the hostname file or using command hostnamectl

Nov 102017

ADM

ISO8583 flows, fields meaning and values

  • 10 November 2017
  • ADM

ISO8583 message flows, data elements values and meanings. Message flows examples, most used data elements and values.

May 232016

ADM

Windows basics commands and tools for developers

  • 23 May 2016
  • ADM

Windows command prompt basics commands like ping, telnet, dir, cd, ipconfig and tools like Task Manager, Services, Registry.

Apr 052016

ADM

How to prepare a Windows Java Development Machine

  • 05 April 2016
  • ADM

How to prepare a Windows Java Development Machine using Eclipse, NetBeans, Ant, Maven, MySQL, MongoDB, GIT, SVN.