ESP8266 Development with Arduino on Ubuntu

Connect the ESP8266 module via USB, which should create a serial device such as /dev/ttyUSB0. Modify its permsisions with the command sudo usermod -a -G dialout $USER. Log out and back in for the change to take effect. After installing the Arduino IDE, configure it as follows: In File > Preferences, set Additional Boards Manager URLs to: ht ...

Posted on Thu, 21 May 2026 20:00:48 +0000 by jhbalaji

Resolving Docker Daemon Socket Connection Errors on Ubuntu

When the Docker client attempts to reach the daemon through the local Unix socket at /var/run/docker.sock, the server may be unresponsive even if the service appears configured. Initial attempts to launch the daemon through the system's service manager fail immediately: admin@node-01:~$ sudo systemctl start docker Job for docker.service failed ...

Posted on Thu, 21 May 2026 17:57:03 +0000 by Frapster

Secure Installation of phpMyAdmin on Ubuntu 16.04

phpMyAdmin provides a web-based interface for MySQL database management, offering an alternative to command-line interaction. This guide covers installation and security hardening on Ubuntu 16.04. Prerequisites A non-root user with sudo privileges. A fully configured LAMP stack (Linux, Apache, MySQL, PHP). SSL/TLS encryption via Let's Encrypt ...

Posted on Tue, 19 May 2026 17:55:13 +0000 by lip9000

Configuring Persistent Disk Mounting on Ubuntu

1. Identify the Target DiskUse the lsblk or fdisk utility to list available block devices and identify the correct drive identifier.lsblk # or sudo fdisk -l 2. Create a FilesystemIf the disk is unformatted, create a new filesystem. The following example formats the partition /dev/sdc1 using the ext4 filesystem.sudo mkfs.ext4 /dev/sdc1 3. Create ...

Posted on Tue, 19 May 2026 03:22:02 +0000 by sarabjit

Installing and Configuring Metasploit Framework on Ubuntu

Automated Installation via ScriptThe Metasploit Framework can be deployed rapidly on Ubuntu systems using the official Rapid7 installer. This method automates the installation of dependencies and the framework itself.curl https://raw.githubusercontent.com/rapid7/metasploit-omnibus/master/config/templates/metasploit-framework-wrappers/msfupdate. ...

Posted on Mon, 18 May 2026 15:13:07 +0000 by mydownfall

Installing MariaDB on Ubuntu Systems

MariaDB Installation Process Execute the following command to install both server and client components: sudo apt-get install mariadb-server mariadb-client Verifying Installation Status Checking Version mysql --version Example output: mysql Ver 15.1 Distrib 10.1.29-MariaDB, for debian-linux-gnu (x86_64) Checking Service Status sudo service m ...

Posted on Sun, 17 May 2026 05:44:59 +0000 by TheFilmGod

Automating KVM VM Deployment with cloud-init for Password-Based SSH Access

Download an Ubuntu 22.04 cloud image for your architecture: wget https://cloud-images.ubuntu.com/jammy/current/jammy-server-cloudimg-amd64.img -O base-image.qcow2 Create a cloud-init configuration file named bootstrap.yaml to initialize system settings: #cloud-config users: - name: operator sudo: ALL=(ALL) NOPASSWD:ALL shell: /bin/ba ...

Posted on Sat, 16 May 2026 08:51:42 +0000 by synstealth

Building FFmpeg 6.x from Source on Ubuntu 22.04.3 LTS

Instaling Required Depandencies Begin by isntalling the essential development packages needed for compilation: sudo apt update sudo apt install build-essential nasm Install video and audio codec libraries for comprehensive format support: sudo apt install libx264-dev libx265-dev libaom-dev \ libvorbis-dev libmp3lame-dev libfdk-aac-dev libass-d ...

Posted on Fri, 15 May 2026 17:51:07 +0000 by JCF22Lyoko

Setting up a Kubernetes Cluster on Ubuntu Using kubeadm

Kubernetes is an open-source container orchestration platform, and kubeadm is a tool provided by the Kubernetes team for quickly setting up a Kubernetes cluster. This article walks through the process of creating a Kubernetes cluster on Ubuntu using kubeadm, covering prerequisites, installing components, initializing the cluster, and adding wor ...

Posted on Thu, 14 May 2026 20:19:32 +0000 by puretony

Fixing APT Dynamic MMap Exhaustion in Ubuntu Jammy on FreeBSD Jail

An apt update or apt full-upgrade inside an Ubuntu Jammy installation running under FreeBSD jail may abort with: E: Dynamic MMap ran out of room. Please increase the size of APT::Cache-Start. Current value: 25165824. (man 5 apt.conf) E: Dynamic MMap ran out of room. Please increase the size of APT::Cache-Start. Current value: 25165824. (man 5 a ...

Posted on Thu, 14 May 2026 11:02:41 +0000 by Grant Cooper