Set 3

Ubuntu L2-Corporal Industry Assignments

(Set 3 | Index 21–30) Root Working Directory: ~/kactii27

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21. Process Tree Analysis & Impact Assessment

Scenario: An outage investigation requires understanding parent–child process relationships.

Instructions:

• Navigate to ~/kactii27

• Create a folder named process_tree

• Display full system process tree

• Filter processes owned by your user

• Identify parent and child relationships

• Save output to process_tree.txt

Commands Expected: pstree, ps -ef, grep, redirection

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22. File Permission Drift Detection

Scenario: Permissions have changed unexpectedly over time.

Instructions:

• Navigate to ~/kactii27

• Create a folder named permission_drift

• Create files with baseline permissions

• Modify permissions incrementally

• Capture before/after permission states

• Save comparison to drift_report.txt

Commands Expected: chmod, ls -l, stat, redirection

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23. Controlled CPU Load Simulation

Scenario: Ops wants to observe system behavior under CPU load.

Instructions:

• Navigate to ~/kactii27

• Create a folder named cpu_load_test

• Start a CPU-intensive test process

• Monitor CPU usage

• Safely terminate the process

• Save observations to cpu_load.txt

Commands Expected: yes, top, ps, kill, redirection

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24. Disk Usage Growth Tracking

Scenario: Unexpected disk growth is suspected.

Instructions:

• Navigate to ~/kactii27

• Create a folder named disk_growth

• Capture initial disk usage

• Add files to increase usage

• Capture post-change usage

• Save comparison to growth_report.txt

Commands Expected: df -h, du -sh, redirection

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25. Advanced Text Filtering Pipeline

Scenario: Support must extract actionable data from logs.

Instructions:

• Navigate to ~/kactii27

• Create a folder named text_pipeline

• Create a log-style text file

• Filter, sort, and de-duplicate entries

• Save final output to filtered_logs.txt

Commands Expected: grep, sort, uniq, pipes (|), redirection

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26. Safe Recursive Deletion Review

Scenario: A cleanup task risks deleting critical files.

Instructions:

• Navigate to ~/kactii27

• Create a folder named safe_cleanup

• Populate nested directories and files

• Preview deletion targets

• Perform controlled recursive deletion

• Capture actions in cleanup_log.txt

Commands Expected: find, rm -r, ls, redirection

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27. Network Interface Change Detection

Scenario: Network drops occur intermittently.

Instructions:

• Navigate to ~/kactii27

• Create a folder named interface_monitor

• Capture current interface state

• Bring an interface down (if permitted) and up

• Re-capture state

• Save results to interface_changes.txt

Commands Expected: ip link, ip a, redirection (Use observation only if interface control is restricted)

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28. Mount Point Dependency Analysis

Scenario: Services depend on mounted directories.

Instructions:

• Navigate to ~/kactii27

• Create a folder named mount_dependencies

• List mounted filesystems

• Identify bind or nested mounts

• Document mount relationships

• Save output to mount_map.txt

Commands Expected: mount, findmnt, df -h, redirection

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29. Command Resolution Conflict Investigation

Scenario: Different command versions behave inconsistently.

Instructions:

• Navigate to ~/kactii27

• Create a folder named command_conflict

• Identify all paths for a common command

• Inspect resolution order

• Document findings in command_resolution.txt

Commands Expected: which -a, type -a, whereis, redirection

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30. System Failure Reproduction Log

Scenario: Support must reproduce and document a controlled failure.

Instructions:

• Navigate to ~/kactii27

• Create a folder named failure_reproduction

• Execute a failing command intentionally

• Capture error output and exit status

• Document steps and results

• Save output to failure_log.txt

Commands Expected: false, invalid command execution, $?, error redirection

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