Linux: Navigate Files and Read a Configuration
Locate an application configuration, distinguish relative and absolute paths, and read the file without changing it. Work through it yourself in the live host terminal below.
Symptom
Locate an application configuration, distinguish relative and absolute paths, and read the file without changing it.
Your mission
Inspect, recover, then verify
Format
Linux shell
Investigate before you configure.
Use the CLI evidence to isolate the fault, make the smallest safe correction, then verify the network state changed.
Observe the symptom and link state.
Diagnose by comparing the protocol evidence.
Verify the expected device state and confirm the original symptom is resolved.
Console access: Linux
This workspace stacks for portrait phones. Rotate to landscape for the full split-screen console.
Need a hint?
Reveal the root cause when you're ready.
Try the investigation first, then use this as your escape hatch, not a dead end.
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Lab debrief
Turn the session into a repeatable troubleshooting pattern.
Use this reference after your attempt: first explain the symptom, then verify the evidence, then confirm the repair.
The problem
A service note says its configuration lives under /home/labuser/projects/webapp/config, but you start in your home directory.
What you'll practice
- Confirm the current directory with pwd
- List entries with ls
- Change directories with cd
- Read a file with cat
The topology
One Linux host has a small webapp project under the lab user's home directory.
Commands to run yourself
The real diagnostic commands for this lab, copy-paste ready. Run these in the same order to reproduce the investigation on your own session.
pwdls /home/labuser/projects/webappTopology diagram
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Fact-checked references
The commands and behaviour in this lab were checked against these primary references.
Frequently asked
What is a relative path?
It starts at your current working directory. An absolute path starts at the filesystem root, `/`.
Does cat edit the file?
No. It prints file contents to standard output.
Ready to run this lab yourself?
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