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Archive: January 2020


Automating PostgreSQL Daily Tasks Using Jenkins

  About Jenkins Jenkins is an open source software for automation. It is developed in java and is one of the most popular tools for Continuous Integration (CI) and Continuous Delivery (CD). In 2010, after the acquisition of Sun...


How to backup a PostgreSQL database using Docker

  Before you begin In this tutorial, we’ll learn how to backup a PostgreSQL database. A Linux machine and Docker will be required to follow this tutorial. Backup a PostgreSQL local or remote database Command to...


Basic Linux Commands

  New Linux converts coming from the Windows world may find working with the command line to be somewhat intimidating. However, it’s not that difficult to use. All you need to get started with the command line is to learn a few basic...


Cat Command in Linux

  The cat command is one of the most widely used commands in Linux. The name of the cat command comes from its functionality to concatenate files. It can read and concatenate files, writing their contents to the standard output. If no...


How to Conditionally Create a File in a Dockerfile Build

  Here we are going over how to conditionally create within a Docker image build in a Dockerfile. For example: If a specified file is not in the working directory, create a file. Otherwise, use the specified file. Motivation The main reason I...


Top 32 Nmap Commands For Linux Sys/Network Admins

  Nmap is short for Network Mapper. It is an open source security tool for network exploration, security scanning and auditing. However, nmap command comes with lots of options that can make the utility more robust and difficult to follow for...

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