LabEx

Changelog

Records of newly added courses and revised Labs

Oct 14, 2026

1 revision

Developer Environment Config

  • 1Corrected environment-variable verification to accept quoted production values and check exports using Zsh.

Oct 13, 2026

1 revision

Cryptographic Hashing Concepts

  • 1Corrected the avalanche-effect command and explanation to change Hello to hello.
  • 2Replaced incorrect hash examples with the actual command outputs.
  • 3Updated altered-file verification to require the lowercase greeting.

Oct 12, 2026

2 revisions

Full Web Account Takeover

  • 1Provided the low-privilege login credentials in Step 1 and clarified the credential hint.

PowerShell for Beginners

COURSENEW

Learn PowerShell 7 from the basics through 16 guided labs and 16 matching challenges. Practice files, objects, pipelines, CSV, JSON, reusable scripts, process management, and local APIs in a browser-based Linux environment.

Beginner32 labspowershellscriptingautomation

Oct 11, 2026

1 revision

Hadoop Applying Scheduler

  • 1Replaced unsupported YARN scheduler commands with configuration-file edits, ResourceManager restarts, and active scheduler inspection.
  • 2Corrected step checks to verify scheduler inspection and active queue configurations.

Oct 09, 2026

1 revision

Analyzing PATH Directories

  • 1Fixed challenge verification to reject missing or incorrect normalized directory lists.

Oct 08, 2026

1 revision

Linux Pattern-Based Killing

  • 1Corrected pkill --newest syntax, clarified that it selects one process, and aligned the example timing and expected remaining processes.

Oct 07, 2026

2 revisions

MySQL Error Handling and Logging

  • 1Corrected error-log verification to query the database directly in the container environment.

MySQL Partitioning for Large Datasets

  • 1Fixed query and profiling checks to read a live MySQL session transcript.
  • 2Aligned partition checks with the final merged and dropped partition state.

Sep 30, 2026

1 revision

YARN Architecture and Development

  • 1Replaced incomplete Java fragments with complete client and ApplicationMaster source files.
  • 2Added local Java 8 compilation and execution of the learner-built YARN application with matching completion checks.