Posts

• chown — change file owner and group on Linux — June 8, 2026
  How to use the chown command on Linux to change the owner and group of files and directories, with practical examples
• bc — GNU Linux command line calculator — June 8, 2026
  How to use bc, the GNU Linux command line calculator, for basic and advanced arithmetic directly from the terminal or inside shell scripts
• GoAccess — real-time web log analyzer for Apache, Nginx, and Caddy — June 8, 2026
  How to install and use GoAccess to analyze web server access logs in real time, both as an interactive terminal dashboard and as a self-contained HTML report
• How to add a user to a group in Linux — June 8, 2026
  How to add a user to a group in Linux using usermod, useradd, and gpasswd — with examples for existing users, new users, primary groups, and multiple groups at once
• apt-get and aptitude — package management and orphan cleanup on Debian and Ubuntu — June 8, 2026
  Understand the difference between apt-get and aptitude on Debian and Ubuntu, and how autoremove keeps your system clean from orphan packages
• How to change the hostname on Linux — June 8, 2026
  How to change the hostname on Linux permanently using hostnamectl on systemd systems, and also the traditional method for older systems
• Bash for loop — a practical guide — June 8, 2026
  Learn how to use the bash for loop in scripts and the command line, with practical examples including counters, ranges, break and continue
• How to change the default text editor on Debian and Ubuntu — June 8, 2026
  How to change the default text editor on Debian and Ubuntu using update-alternatives, select-editor, and the EDITOR environment variable
• at — schedule one-time tasks from the Linux command line — June 8, 2026
  How to use the at command on Linux to schedule commands and scripts to run once at a given time, with practical examples
• chage — manage password expiry and aging on Linux — June 8, 2026
  How to use the chage command on Linux to set password expiration policies, force password changes, and manage account expiry for users
• checkinstall — create a .deb or .rpm package from source code — June 8, 2026
  How to use checkinstall to compile software from source and install it as a proper .deb or .rpm package, making it easy to track and remove later
• How to self-host your email server with Mailcow — May 29, 2026
  Step by step guide to host your own email server with Mailcow and Docker
• diff — Linux command to compare files — May 29, 2026
  How to use the diff command in Linux to compare files and directories, with examples for unified output, patches, and recursive directory comparison.
• df — Linux command line tool to display disk space usage — May 28, 2026
  How to use the df command on Linux to check disk space usage, free space, filesystem types, and inode usage
• du — Linux command line to display disk usage per file and directory — May 28, 2026
  How to use the du command on Linux to find which files and directories are using the most disk space
• iotop — monitor disk I/O in real time on Linux — May 27, 2026
  How to use iotop to monitor disk read and write activity per process in real time on Linux
• history — the Linux command to manage your command line history — May 27, 2026
  How to use the history command on Linux: search, re-run, configure and get the most out of your shell history
• htop — an improved top for Linux — May 27, 2026
  How to use htop to monitor processes, CPU, and memory on Linux — a friendlier and more powerful alternative to top
• grep — Linux command line, search for patterns in files — May 27, 2026
  How to use the grep command on Linux to search for strings and patterns in files, with practical examples
• tail — Linux command line to display the end of a file — May 27, 2026
  How to use the tail command on Linux, including the -f option to follow log files in real time
• Docker for Self-Hosting on a VPS — No Kubernetes Needed — May 26, 2026
  A simple and practical Docker setup for self-hosted apps using Caddy as a reverse proxy on a single VPS
• The site is back after two years offline — May 26, 2026
  A short note about bringing the site back online after almost two years offline and three years without publishing new content.
• Ten useful Docker commands — July 29, 2020
  Ten useful Docker commands
• Show Docker container logs — July 20, 2020
  How to check Docker compose logs from the host
• Arch Linux, Aur error - FAILED unknown public key — July 9, 2020
  How to solve Arhc Linux problem of FAILED unknown public key
• How to add a second private key to ssh in Linux — July 6, 2020
  How to add a second private Key to Linux server to log using ssh
• How to install Wallabag on Ubuntu using SQLite — July 4, 2020
  How to install Wallabag on Ubuntu Linux with Nginx and SQLite
• How to use awk to print text string between characters — June 14, 2020
  How to print a specific string of text that is between specific characters
• How to list the active cronjobs in Linux — June 2, 2020
  How to list active cronjobs in Linux
• How to create users in Linux with useradd — May 31, 2020
  How to create Linux users with useradd
• How to add a new service to systemd — May 31, 2020
  How to add a new service to systemd
• Install from Debian backports — May 23, 2020
  How to enable Debian Backports
• Install old ruby 2.3.x on latest Ubuntu 20.04 — May 22, 2020
  How to install ruby 2.3.3 on Ubuntu 20.04
• Install Zoom on Ubuntu — May 21, 2020
  How to install zoom on Ubuntu Linux
• Create python virtual environment — May 20, 2020
  How to create virtual environment for Python on Ubuntu Linux
• Access WSL Linux files from Windows 10 Explorer — May 20, 2020
  How to access WSL files from Windows 10
• How to install pip on Ubuntu — May 20, 2020
  How to install python pip on Ubuntu Linux
• Install NodeJS on Ubuntu — May 19, 2020
  How to install NodeJS on Ubuntu
• Install ruby on Ubuntu 20.04 — May 16, 2020
  How to install ruby on Ubuntu 20.04 with rbenv
• sshd: no hostkeys available -- exiting — May 11, 2020
  Error: sshd: no hostkeys available -- exiting
• How to password protect a file in Linux — May 9, 2020
  How to password protect a file in Linux
• How to install Brackets on Ubuntu — May 1, 2020
  How to install Brackets on Ubuntu
• How to upgrade Ubuntu LTS, Bionic to Focal — May 1, 2020
  How to upgrade from Ubuntu 18.04 LTS to 20.04 LTS
• Clean a git repo — April 26, 2020
  How to clean a git repo completely
• Empty Streets — April 19, 2020
  Empty streets because of Corona-virus covid-19 in Bolivia
• Apache in a Docker container — April 9, 2020
  How to have a running Apache server in a Docker container
• rsync — April 5, 2020
  rsync guide, how-to and tips
• Linux command line spotify player — April 5, 2020
  How to listen to music from Linux command line whith low memory use
• build-essential in Arch Linux — March 31, 2020
  What is the equivalent to build-essential in Arch Linux
• Logrotate — March 31, 2020
  Everything about logrotate on Linux