Articles by Dejan Panovski
How to Mount and Unmount File Systems in Linux
Mount and unmount file systems in Linux with the mount and umount commands. Examples cover USB drives, ISO files, NFS shares, bind mounts, and persistent /etc/fstab entries.
How to Check Python Version
Check the Python version on Linux, macOS, or Windows, locate the active interpreter, and read version information from inside a script.
How to Rename Files and Directories in Linux
Rename files and directories in Linux using mv for single renames and rename for batch filename changes, including extension changes, case conversion, and safe previews.
How to Set a Static IP Address on Ubuntu Server and Desktop
Set a static IP address on Ubuntu with Netplan on servers, nmcli from the command line, or GNOME Settings on the desktop, and test the change safely with netplan try.
How to Create Groups in Linux: groupadd Command
This guide explains how to create groups in Linux using the groupadd command, including how to set a custom GID, create system groups, and manage group options.
GitHub CLI: Manage Repositories, Issues, and Pull Requests
Use GitHub CLI to create and clone repositories, manage pull requests and issues, inspect workflow runs, set Actions secrets, publish releases, and call the GitHub API.
scp Command in Linux: Secure File Transfer Examples
SCP copies files securely between local and remote hosts over SSH. This guide covers syntax, uploads, downloads, custom ports, and the options you need for everyday transfers.
How to Set Git Username and Email with git config
Set Git username and email with git config, both globally and per repository, check the current values, and update existing settings.
Free Command in Linux
Learn how to use the Linux free command to check RAM and swap usage. Includes output explained, human-readable format, and useful options.
How to Check Memory Usage in Linux
Check RAM and swap usage in Linux with free, top, /proc/meminfo, and ps_mem, and find out which processes are consuming the most memory.
Fix the NO_PUBKEY GPG Error on apt update
Fix the apt NO_PUBKEY error on Ubuntu and Debian by installing a verified repository signing key under /etc/apt/keyrings and using signed-by.
Create a Linux Swap File
How to create and enable a swap file on Linux, configure swappiness, resize an existing swap file, and remove it when no longer needed.
ifconfig Command in Linux: Configure Network Interfaces
Read the ifconfig output field by field, fix command not found, and assign IPv4 and IPv6 addresses, MTU, and MAC values, with the ip equivalent alongside.
How to Change the Swappiness Value in Linux
Check and change Linux swappiness with sysctl, including the 0 to 200 range, persistent settings, and guidance for disk swap and zram.
dpkg Command in Linux: Install and Manage Debian Packages
Use dpkg to install, remove, query, and inspect Debian packages on Ubuntu, Debian, and other Debian-based distributions.
Sudo Command in Linux: Run Commands as Root
The sudo command runs programs as root or another user. This guide covers sudoers setup, root shells, sudoedit, credential caching, and common sudo options.
How to Increment and Decrement a Variable in Bash: Counter Examples
Bash provides several ways to increment and decrement a counter variable in scripts. This guide covers the +/- operators, += and -= assignment operators, and the ++ and -- shorthand with practical examples.
How to List Cron Jobs in Linux
View and list all cron jobs on Linux: user crontabs with crontab -l, system jobs in /etc/crontab and /etc/cron.d, and systemd timers.
How to Install Google Chrome Web Browser on Ubuntu 24.04
Step-by-step instructions for downloading, installing, updating, and managing Google Chrome on Ubuntu 24.04 using the official .deb package and repository.
What Is localhost? 127.0.0.1 and Loopback Explained
Localhost connects programs back to your own computer through 127.0.0.1 or ::1. See how loopback addresses, ports, /etc/hosts, and 0.0.0.0 work on Linux.
