Labby - DEV Community

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Nov 22

DevOps Foundations: 5 Hands-On Labs on Linux Security (SELinux, Permissions) and Podman/Skopeo Container Management

#devops #linux #podman #security

2 min read

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Nov 21

MySQL Database Performance: Managing Indexes, SHA-256 Encryption, and Secure Data Insertion

#mysql #database #indexing #sql

2 min read

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Nov 20

SQLite Advanced Labs: CTE Queries, Foreign Keys, and Data Integrity for Embedded Apps

#sqlite #sql #database #integrity

3 min read

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Nov 19

MySQL Labs: Change Default Value, Add Constraints, and Insert Student Data

#mysql #sql #database #tutorial

2 min read

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Nov 18

CompTIA Prep: 4 Hands-On Labs for Linux Hardening, Log Analysis, and Docker Security

#comptia #linux #security #docker

2 min read

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Nov 17

Practical Redis Database Mastery: Labs on Sorted Sets, Performance Tuning, and List Commands

#redis #database #performance #tutorial

2 min read

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Nov 16

Redis Basic Data Management: Key-Value Operations and Atomic Counters Tutorial

#redis #keyvalue #counters #tutorial

2 min read

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Nov 15

Ansible Automation Mastery: Hands-On Labs for Inventory Grouping, Apt Package Management, and the Fetch Module

#ansible #automation #tutorial #configuration

2 min read

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Nov 14

Java Programming Labs: Calculate Sum of Digits, Standard Deviation, and Coordinate Subtraction (5 Hands-on Exercises)

#java #programming #tutorial #standarddeviation

3 min read

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Nov 13

Nmap Hands-On: Explore Verbosity, UDP Scanning, and Network Discovery Techniques

#nmap #networkscanning #cybersecurity #udpscan

2 min read

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Nov 13

LabEx Launches 2025 Black Friday Deals

#blackfriday #cybersecurity #linux #devops

1 min read

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Nov 12

Linux Security Auditing: 5 Hands-On Labs for Rsync Anonymous Sync, SMB Guest Access, and SSH Key Enumeration

#linux #cybersecurity #sysadmin #hashcat

3 min read

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Nov 11

Apply Descendant Selectors & Background Styles: Essential CSS Techniques for HTML

#html #css #selectors #webdev

2 min read

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Nov 9

3 Hands-On PostgreSQL Labs: Setup, Data Filtering (WHERE/LIKE), and PL/pgSQL Error Handling

#postgres #sql #plpgsql #filtering

2 min read

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Nov 8

NumPy Array Operations Challenge: Master Indexing, Slicing, and Binary Operations (3 Hands-On Labs)

#numpy #python #datascience #tutorial

2 min read

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Nov 7

Alibaba Cloud Labs: Canary Releases with MSE, Kubernetes Log Mastery & Tomcat Session Sharing

#alibabacloud #kubernetes #devops #tutorial

4 min read

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Nov 6

RHEL Quick Start: 4 Hands-on Labs for Storage, Security, and Container Persistence

#rhel #linux #firewalld #lvm

2 min read

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Nov 5

RHCSA Prep: 4 Hands-On Labs for RHEL - Tar, Shell Scripting, User Groups, and Symbolic Links

#rhel #rhcsa #linux #shellscripting

2 min read

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Nov 4

Java LocalDate: 5 Essential Methods (plus, ofEpochDay, now(Clock)) for Accurate Date Calculations

#java #localdate #tutorial #dateapi

3 min read

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Nov 3

Database Essentials: Insert Student Data, MySQL Backup with mysqldump, and Index Optimization

#database #mysql #mysqldump #indexing

2 min read

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Nov 2

Python Coding Challenges: FizzBuzz, String Equality, and Heterogram Checks for Beginners

#python #beginners #coding #fizzbuzz

3 min read

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Nov 1

Hydra Brute-Force: 5 Labs to Crack Telnet, HTTP, and FTP Credentials (Verify Installation & Speed)

#hydra #bruteforce #pentesting #tutorial

3 min read

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Oct 31

SQLite Performance Tuning: 3 Practical Labs for PRAGMA, Indexing, and FTS5 Full-Text Search

#sqlite #optimization #fts5 #sql

2 min read

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Oct 30

Jenkins CI/CD: Docker Installation, Interface Navigation, and Declarative Pipeline Tutorial

#jenkins #cicd #devops #pipeline

2 min read

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Oct 29

4 HTML Challenges: Build a Custom Membership Card & Fix Display Issues with Real-World Code Labs

#html #webdev #beginners #labs

3 min read

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Oct 28

4 Linux Security Labs: Implementing CIA Triad, GPG Cryptography, and Detecting Command Injection Attacks

#linux #security #cryptography #sysadmin

3 min read

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Oct 27

Red Hat Enterprise Linux: Configure Firewalld, Secure SSH Keys, and Container Persistence Labs

#rhel #firewalld #ssh #containers

2 min read

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Oct 26

5 Hands-On Redis Labs: Sorted Sets, Pub/Sub Messaging, Transactions, and Security Configuration

#redis #database #tutorial #security

3 min read

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Oct 25

Hands-On MongoDB: 3 Labs to Filter Collections, Create Schemas, and Model User Profiles

#mongodb #nosql #database #tutorial

2 min read

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Oct 24

5 Pandas Labs: Master .query(), E-commerce String Cleaning, and Advanced Data Filtering with .where()

#pandas #python #dataanalysis #tutorial

1

3 min read

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Oct 23

5 Python Projects for DevOps: Build a Network Scanner, Tkinter GUI, and Game Automation Scripts

#python #devops #scripting #automation

3 min read

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Oct 22

4 NumPy Labs: Array Creation, Advanced Indexing, Vectorized KNN, and Gradient Edge Detection

#numpy #datascience #knn #tutorial

3 min read

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Oct 21

Scikit-Learn 4-Step Path: Mastering Classification with Naive Bayes, SVM, and Essential Metrics

#scikitlearn #machinelearning #classification #datascience

3 min read

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Oct 20

SQLite Mastery: 5 Labs on Database Backup, CTE Queries, and Linux Setup for Data Management

#sqlite #sql #database #tutorial

3 min read

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Oct 19

Visualize Data Stories: 5 Matplotlib Labs on Subplots, Scatter, Pie Charts, and Histograms

#matplotlib #python #dataviz #datascience

2 min read

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Oct 18

Nmap Mastery Path: 3 Hands-On Labs to Scan, Exploit Vulnerabilities, and Explore Verbosity Levels

#nmap #scanning #cybersecurity #exploitation

2 min read

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Oct 17

Red Hat Enterprise Linux: Hands-On Labs to Extend LVM, Troubleshoot SELinux Policy, and Master Shell Scripting

#rhel #linuxadmin #selinux #shellscripting

3 min read

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Oct 16

Kali Linux Lab: Build Tool Directory, Nmap Port Scan, and Metasploit Console Start

#kalilinux #nmap #metasploit #hacking

2 min read

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Oct 15

MongoDB Tutorial: Hands-On Labs to Create MongoDB Collection and Master NoSQL CRUD Operations

#mongodb #nosql #tutorial #database

1 min read

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Oct 14

Alibaba Cloud Hands-On: Build AI with TensorFlow, Automate IaC with Terraform, and Secure Websites with WAF

#alibabacloud #tensorflow #terraform #waf

2 min read

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Oct 13

Hands-On Kali Linux Setup: Verify Version, Environment, and Tool Directory Structure

#kalilinux #pentesting #cybersecurity #tutorial

2 min read

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Oct 12

Optimizing C++ Fibonacci Performance, Fixing C++14 Bugs, and Singleton Design: 5 Hands-On Labs

#cpp #performance #designpatterns #tutorial

4 min read

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Oct 11

MongoDB CRUD & Schema Design: 5 Labs to Write Queries, Filter, Delete, and Export Data

#mongodb #nosql #crud #schema

2 min read

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Oct 10

Docker Labs: Run Containers, Master Graceful Shutdown (Arctic Mission), and Image Repository Search

#docker #containers #devops #tutorial

2 min read

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Oct 9

Bash Scripting for Linux Sysadmins: Automate File Metadata, User Management, and Logic Patterns

#bash #linuxautomation #sysadmin #shell

2 min read

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Oct 8

JavaScript Kickstart: 4 Hands-On Labs for CSS Selectors, Box Shadows, and Array Manipulation

#javascript #css #webdev #tutorial

1

2 min read

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Oct 7

HTML Foundation to Full-Stack: 5 Labs Including Vue.js Task Manager and Flask URL Shortener

#html #webdev #vue #flask

1

3 min read

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Oct 6

Hands-On MongoDB Labs: Insert Data, Update Records (Operators), and Export Data Fast

#mongodb #nosql #database #tutorial

2

2 min read

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Oct 5

SQLite Mastery: Linux Setup, Efficient INNER/LEFT JOINs, and ON CONFLICT Error Handling

#sqlite #sql #database #tutorial

2 min read

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Oct 4

5 MongoDB Labs: Filter, Sort, Export, and Delete Data Collections (Your First MongoDB Tutorial)

#mongodb #nosql #tutorial #filtering

2 min read

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Oct 3

Python Path Experiments: Run Scripts from CLI, Configure Networks, and Uncover Object Secrets with dict

#python #cli #networking #tutorial

2 min read

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Oct 2

Learn Nmap Network Port Scanning: Hands-On SYN Scans and Target Specification for Security Auditing

#nmap #scanning #security #tutorial

2 min read

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Oct 1

Golang Fundamentals: Master Multidimensional Arrays, Strings, and Constants with 4 Hands-On Labs

#go #arrays #beginners #tutorial

2 min read

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Sep 30

4 JavaScript Projects: Build a React Heatmap, DOM Game, Prize Draw, and Voting App

#javascript #react #projects #tutorial

3 min read

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Sep 29

Jenkins Pipeline Tutorial: Git Integration, User Management & Declarative CI/CD in 5 Steps

#jenkins #pipeline #devops #tutorial

3 min read

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Sep 28

Git Mastery Labs: Advanced Staging, History Rewriting, and Commit Manipulation Techniques

#git #versioncontrol #tutorial #devops

2 min read

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Sep 27

Scikit-learn Hands-On: 5 Projects from Iris k-NN to Credit Risk Prediction

#scikitlearn #machinelearning #tutorial #creditrisk

3 min read

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Sep 26

3 Hands-On Kali Linux Labs: Exploring Security Tools, Building Directory Structure, and Verifying System Version

#kalilinux #ethicalhacking #cybersecurity #penetrationtesting

2 min read

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Sep 25

Docker Swarm & Registry: Hands-On Guide to Packaging, Connecting & Orchestrating Apps

#docker #containerization #devops #swarm

3 min read

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Sep 24

Ansible Core Modules: Hands-on Labs for get_url, cron, command, local_action

#ansible #automation #devops #tutorial

1

2 min read

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