Dejan Panovski

Articles by Dejan Panovski

Mar 6, 2026 • 5 min read

How to Truncate Files in Linux: Empty Files Without Deleting

Empty a file without deleting it using shell redirection or the truncate command. Covers permissions, sudo workarounds, and truncating log files.

Terminal showing a file being truncated to zero bytes in Linux

Mar 6, 2026 • 7 min read

How to Use the Linux ftp Command to Transfer Files

Transfer files to and from a remote server using the Linux ftp command. Covers connections, downloads, uploads, passive mode, and binary transfers.

Terminal session showing an FTP file transfer in progress

Mar 6, 2026 • 4 min read

lsmod Command in Linux: List Kernel Modules

Display all currently loaded Linux kernel modules with lsmod. This guide covers output format, filtering, and related module management commands.

Terminal output of the lsmod command showing loaded kernel modules

Mar 6, 2026 • 4 min read

How to Install Git on Debian 13

Step-by-step instructions for installing and configuring Git on Debian 13 Trixie using apt or by compiling from source.

Terminal showing Git installation on Debian 13

Mar 5, 2026 • 6 min read

rename Command in Linux: Rename Multiple Files

Batch rename files in Linux with the rename command using Perl regular expressions. Includes syntax, examples, and tips for the Perl and C versions.

Terminal showing rename command renaming multiple files

Mar 5, 2026 • 8 min read

Crontab: Scheduling Cron Jobs in Linux

Cron is a Linux scheduling daemon that runs tasks at defined intervals. This guide explains crontab syntax, operators, predefined macros, environment variables, and practical scheduling examples.

Crontab cron job scheduling syntax and examples in Linux

Mar 5, 2026 • 6 min read

ss Command in Linux: Display Socket Statistics

The ss command displays socket statistics and open ports and is the modern replacement for netstat. This guide explains how to list TCP, UDP, and Unix sockets, filter by port and state, and identify which process owns a socket.

Using the ss command to display socket statistics in Linux

Mar 5, 2026 • 6 min read

pgrep Command in Linux: Find and Filter Running Processes

The pgrep command finds running processes by regex pattern, user, terminal, or parent PID and prints matching PIDs. This guide covers exact matching, filtering options, and script-friendly exit checks.

Using the pgrep command to find running process IDs in Linux

Mar 4, 2026 • 4 min read

unlink Command in Linux: Remove a Single File

The unlink command removes a single file by deleting its directory entry. This guide explains how to use unlink, how it differs from rm, and what to expect when removing files and symbolic links.

Using the Linux unlink command to remove a file from the command line

Mar 4, 2026 • 6 min read • series

How to Change the SFTP Port

SFTP runs on SSH port 22 by default. This guide explains how to change the SFTP port on Linux, configure your firewall for the new port, and connect using the updated port number.

Editing sshd_config to change the SFTP port on Linux

Mar 4, 2026 • 6 min read

uniq Command in Linux: Remove and Count Duplicate Lines

The uniq command removes or counts duplicate adjacent lines in a file. This guide explains how to filter duplicates, count occurrences, and use uniq with sort in pipelines.

Using the Linux uniq command to remove duplicate lines from a file

Mar 3, 2026 • 4 min read

How to Install Git on Raspberry Pi

Install and configure Git on Raspberry Pi OS using apt or build the latest version from source. Includes configuration steps, troubleshooting, and FAQ.

Installing Git on Raspberry Pi OS using the terminal

Mar 3, 2026 • 6 min read

Using curl to Make REST API Requests

Use curl to test and interact with REST APIs from the command line. Covers GET, POST, PUT, PATCH, DELETE, authentication, and response inspection with examples.

Mar 3, 2026 • 6 min read

How to Start, Stop, and Restart Apache on Linux

Manage the Apache web server with systemctl on Ubuntu, Debian, Fedora, and RHEL. Covers start, stop, restart, reload, status, enable on boot, and config testing.

Start, stop, and restart the Apache web server on Linux

Mar 2, 2026 • 4 min read

pwd Command in Linux: Print the Current Working Directory

The pwd command prints the current working directory in Linux. This guide covers pwd syntax, the -L and -P options, the $PWD variable, and how symlinks affect the output.

Using the pwd command to print the current working directory in Linux

Mar 2, 2026 • 4 min read

How to Install TeamViewer on Ubuntu 24.04

Step-by-step instructions for installing TeamViewer on Ubuntu 24.04. Covers downloading the .deb package, launching the application, keeping it up to date, and removing it.

Mar 2, 2026 • 7 min read

Check Open Ports in Linux: nmap, netcat, and Bash

Three ways to check which ports are open on a Linux system from the command line: nmap, netcat, and the Bash /dev/tcp pseudo-device.

Checking open ports on a Linux system from the command line

Mar 2, 2026 • 7 min read

ifconfig Command in Linux: Configure Network Interfaces

Configure and view network interfaces in Linux using ifconfig. Covers IP assignment, enabling and disabling interfaces, MTU, MAC address changes, and modern ip command equivalents.

Using the ifconfig command to configure network interfaces in Linux

Mar 2, 2026 • 8 min read • series

Bash For Loop: Syntax and Examples

A complete guide to the Bash for loop: standard syntax, C-style loops, arrays, ranges, break and continue, and real-world scripting examples.

Bash for loop syntax examples in a terminal

Mar 1, 2026 • 5 min read • series

groupdel Command in Linux: Delete a Group

Learn how to delete a Linux group using the groupdel command. Covers syntax, verification, handling primary group errors, and what happens to files owned by the deleted group.