Articles by Dejan Panovski
How to Check Your Debian Linux Version
Find which Debian version is installed on your system using the command line. Covers lsb_release, /etc/os-release, hostnamectl, and other methods.
How to List and Delete UFW Firewall Rules
Learn how to list active UFW rules, then delete them by number or specification. Includes status verbose, numbered output, rule reset, and SSH lockout recovery.
How to Install Nginx on Debian 13
Step-by-step instructions for installing and configuring Nginx on Debian 13 Trixie using apt, including UFW rules, the systemd service, and your first server block.
How to Set Up Passwordless SSH Login
Set up passwordless SSH login with Ed25519 or RSA key pairs. Copy public keys with ssh-copy-id, use the ssh-agent, and disable password authentication for hardened access.
How to Remove a Symbolic Link (Symlink) in Linux
Remove symbolic links in Linux with rm, unlink, or find. Clean up broken symlinks and avoid the trailing-slash trap that can remove target directory contents.
df Command in Linux: Check Disk Space Usage
Check disk space usage in Linux with the df command. Human-readable output, filesystem types, inode usage, custom output fields, and df vs du.
Tar Command in Linux: Create and Extract Archives with Examples
Create, extract, list, and compress tar archives in Linux. Examples for gzip, bzip2, xz, and zstd, plus excluding files, wildcard extraction, and stripping path components.
How to Install Podman on Ubuntu: Rootless Container Alternative to Docker
Step-by-step instructions for installing Podman on Ubuntu, running rootless containers, building images with Buildah, and switching from Docker.
Best Linux Distributions for Every Use Case
A practical comparison of the best Linux distributions for beginners, developers, servers, gaming, and security testing.
How to Redirect stderr to stdout in Bash
Redirecting stderr and stdout in Bash using 2>&1, &>, and other operators. Covers file descriptors, appending, piping errors, and discarding output with /dev/null.
awk Command in Linux: Syntax, Patterns, and Examples
awk command examples for Linux, including syntax, patterns, field separators, column extraction, filtering, variables, arrays, and shell usage.
Bash String Manipulation: Substring, Replace, Length, and More
Bash string manipulation using parameter expansion: extract substrings, replace text, strip prefixes and suffixes, change case, and check for substrings with practical examples.
Grep Regex: Regular Expressions Syntax and Examples
Use grep regex to match text patterns. Examples for anchors, character classes, quantifiers, alternation, grouping, and PCRE lookarounds.
Grep Exclude: Patterns, Files, and Directories
Use grep to exclude patterns, files, and directories from search results. Examples for --invert-match, --exclude, --exclude-dir, and --include.
Grep Command in Linux with Examples
The grep command searches files for text patterns. Quick examples for case-insensitive, recursive, whole-word, regex, and context-line searches.
nmcli Command in Linux: NetworkManager CLI Reference
The nmcli command manages NetworkManager from the terminal. This guide covers device status, Wi-Fi connections, static IP configuration, DNS settings, and scripting-friendly output.
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 List Groups in Linux
Find which groups a user belongs to in Linux using the groups, id, and getent commands. Includes how to list all groups and group members on the system.
How to List Users in Linux
List all users in Linux with getent passwd or /etc/passwd. Filter human users by UID, check group membership, and see who is logged in.
How to Use wget in Linux with Examples
Step-by-step wget tutorial covering downloads, resuming, recursive mirroring, authentication, and the most useful options.
