Java (JRE/JDK) – Check version installed

The Java development kit (JDK) contains tools for Java development, and the Java Runtime Environment (JRE) contains a JVM to convert byte code .class to machine code, and execute it, in short, the JRE runs Java program. In this this article we will see different methods to check which version is installed on a Linux/Windows system. Read More …

Linux – Mount ext4 USB flash drive to Raspberry Pi [New Question]

A quick question, answered on Heelpbook, about “Mount ext4 USB flash drive to Raspberry Pi”, especially useful when attaching external storage, HDDs or SSDs, to a Raspberry PI (or any Linux-based system) to expand storage for applications and services. Read More …

Run node.js app as a daemon process (Linux)

We have a node.js server/app and we start it by using npm start & (background mode) command through Putty. But the problem is that if we close Putty (or any other SSH client) the server will be stopped after sometime. We can use pm2 of forever process managers to address/fix this scenario. Read More …

Linux – Monitor Disk I/O on Terminal

Monitoring Disk I/O on Linux systems is one of the most common task to follow when analyzing the current performance status of a system and trying troubleshoot/optimize an existing environment, when talking about storage and volumes. Read More …

Linux – Zip (archive and compress) multiple files [New Question]

A quick question, answered on Heelpbook, about “Linux – Zip (archive and compress) multiple files”, an activity quite common on any Linux system when we dealing with downloaded archives and organizing stuff. Read More …