Terminal basics · Lesson 16 of 34 · 8 minutes

Path components

Split paths into filenames and directories.

Open the lab Course map

Mastery 0/3Run itExplain itApply it

learner@clairos:~ $

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Your objectives

Hints are always available. Wrong turns never cost XP.

1
Print filename
Run basename /etc/nginx/sites-available/learn.conf.
Hint & worked example
Remove directory components from a path string.
The command outcome must match the task, including successful access or the explicitly requested failure.
```
basename /etc/nginx/sites-available/learn.conf
```
Remember: String manipulation does not verify that the target exists.
2
Print directory
Run dirname /etc/nginx/sites-available/learn.conf.
Hint & worked example
Extract the directory portion of a path string.
The command outcome must match the task, including successful access or the explicitly requested failure.
```
dirname /etc/nginx/sites-available/learn.conf
```
Remember: A path can be syntactically valid without naming an existing directory.
3
Confirm location
Run pwd.
Hint & worked example
Print the directory that relative paths currently resolve from.
The command outcome must match the task, including successful access or the explicitly requested failure.
```
pwd
```
Remember: A relative path is interpreted from the working directory, not necessarily the home folder.

Understand the pattern

Junior operators build confidence by gathering evidence before changing systems.

basename: Remove directory components from a path string.
String manipulation does not verify that the target exists.
dirname: Extract the directory portion of a path string.
A path can be syntactically valid without naming an existing directory.
pwd: Print the directory that relative paths currently resolve from.
A relative path is interpreted from the working directory, not necessarily the home folder.

Worked example and expected result

$ basename /etc/nginx/sites-available/learn.conf

learn.conf

Exit status: 0. The command completed successfully in the training fixture.

$ dirname /etc/nginx/sites-available/learn.conf

/etc/nginx/sites-available

Exit status: 0. The command completed successfully in the training fixture.

$ pwd

/home/learner

Exit status: 0. The command completed successfully in the training fixture.

Try a variation

Repeat this workflow in the sandbox with a different scratch filename. Keep the system fixtures unchanged and compare the observed output with your expectation before moving on.

Explain it

In “Path components”, which interpretation is safe?A successful first check guarantees that every dependent service is healthy.A path can be syntactically valid without naming an existing directory.A command appearing in history proves it completed successfully.

Apply it elsewhere

Before adapting the dirname workflow from “Path components” to another server, what should you do?Confirm the current directory, target identity, permissions, and the installed command behavior first.Paste the training paths unchanged into production.Skip output inspection whenever the command is familiar.

Keep the momentum.

Complete the lab, then explain and apply the pattern.

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