100 Days of Linux
Beginner
A beginner-first Linux challenge course with 100 practical, scenario-based tasks that build command-line confidence through daily operational missions.
linux
- Intro
- Syllabus
First Handoffs
Reading Operational Evidence
Safe File Changes
Access and Safety Boundaries
DAY 31:Find the Unsafe Permission
DAY 32:Lock the Private Note
DAY 33:Open the Team README
DAY 34:Restore Directory Access
DAY 35:Handoff the Owned File
DAY 36:Assign the Team Group
DAY 37:Identify the Service Account
DAY 38:Restore Reviewer Group Access
DAY 39:Audit Open Write Access
DAY 40:Close the Access Review
Running Work Reliably
DAY 41:Find the Running Worker
DAY 42:Target the Worker PID
DAY 43:Release the Stale Lock
DAY 44:Inspect the Worker Setting
DAY 45:Gate the Next Step on Success
DAY 46:Run the Export in Background
DAY 47:Collect the Export Result
DAY 48:Guard the Slow Check
DAY 49:Prepare the Maintenance Script
DAY 50:Close the Worker Handoff
Local App Validation
DAY 51:Check the Local Health Page
DAY 52:Find the Listening Port
DAY 53:Match Port to Process
DAY 54:Name the Local Service
DAY 55:Fix the Stale Service Name
DAY 56:Prove the Port Is Reachable
DAY 57:Capture Release Headers
DAY 58:Download the Release Artifact
DAY 59:Verify the Release Artifact
DAY 60:Close the App Validation
Tooling and Support Bundles
DAY 61:Locate the Required Tool
DAY 62:Discover the Quiet Option
DAY 63:Install the Missing Helper
DAY 64:Verify the Helper Version
DAY 65:Use the Installed Helper
DAY 66:Check the Tool Option
DAY 67:Find the Provider Package
DAY 68:Pack the Support Logs
DAY 69:Unpack the Support Bundle
DAY 70:Close the Support Bundle
Managed Services
DAY 71:Check Managed Service State
DAY 72:Start the Stopped Service
DAY 73:Enable the Service for Boot
DAY 74:Apply a Service Config Change
DAY 75:Find the Service Error
DAY 76:Repair the Service Command
DAY 77:Prove the Managed Endpoint
DAY 78:Schedule the Maintenance Heartbeat
DAY 79:Fix the Cron Path
DAY 80:Rotate the Application Log
Recovery and Storage
DAY 81:Find the Space Consumer
DAY 82:Clean Only Safe Temp Files
DAY 83:Add the Compatibility Link
DAY 84:Repair the Broken Link
DAY 85:Back Up Before the Change
DAY 86:Restore the Missing File
DAY 87:Find the Oversized Artifact
DAY 88:Verify the Restored Files
DAY 89:Inspect the Recovery Mounts
DAY 90:Repair the Persistent Mount
Operations Simulations
DAY 91:Restore the Daily Export
DAY 92:Recover the Health Check
DAY 93:Restore Service from Backup
DAY 94:Unblock the Deploy Script
DAY 95:Fix the Wrong Output Path
DAY 96:Repair the Log Collector
DAY 97:Secure the Shared Dropbox
DAY 98:Restore Client Routing
DAY 99:Complete the Ops Handoff
DAY 100:Close the Broken Status API Incident
Teacher
Labby
Labby is the LabEx teacher.
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" very good learning and expllain very understanding way thank you"
— Tanvi Ladva
" Clear and concise examples to get a beginner started"
— DesyLinux
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