Linux - devshell.io

Mastering Linux Administration

A comprehensive guide to installing, configuring, and maintaining Linux systems in the modern data center. Coming soon from Packt Publishing!

Bash

Bash Magic - Word Frequency

Calculating the frequency of each word in a regular text file using Bash

Linux

Limit SSH Access on Linux

Allow or deny SSH? You may want to provide a secure and limited SSH access to your public hosts, using SSH keys. Here's a simple a way to do it.

Linux

Secure FTP with Linux

Secure FTP communication with your Linux host. These instructions apply for Ubuntu 18.04 and can easily be adapted for a vast majority of Linux platforms.

Java

Multiple Java Versions

If you use multiple versions of Java in your development environment, perhaps you wished there was a better way to switch from one to the other, instead of remembering to set the JAVA_HOME environment variable.