# Knowledge Check: Navigating the Filesystem

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**1. What does `..` mean in a path?**

*Answer:* One directory up from your current location.

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**2. You're at `/home/student/project`. Does `cd project` do the same thing here as it did at
`/home/student`?**

*Answer:* No — a relative path is re-evaluated from your CURRENT location every time. At
`/home/student`, `project` refers to `/home/student/project`; from inside that same directory,
`project` would refer to `/home/student/project/project`, which likely doesn't exist.

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**3. A file is "hidden" from a normal `ls`. What actually makes it hidden?**

*Answer:* Its name starts with a `.` — it's purely a naming convention `ls` respects by
default, not a real permission or security feature. `ls -a` shows it.

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**4. Where would you expect to find a running system's log files?**

*Answer:* `/var/log` — `/var` holds data that changes while the system runs.

## Instructor Notes

**Facilitation:** Question 2 is the one worth confirming out loud — it's the core "gotcha" of
relative paths.

**Approximate timing:** 5 minutes.