Question 142 of 750

Linux Commands and File Permissions →easyMultiple ChoiceObjective-mapped

How to Search the Entire Filesystem for a File in Linux

This 220-1202 practice question tests your understanding of linux commands and file permissions. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.

A helpdesk technician is assisting a user who is unable to find a file named 'notes.txt' they saved earlier. The user is in their home directory. Which command will search the entire filesystem for this file?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "which command"
Why it matters: Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.

A
locate notes.txt
Why wrong: This command relies on a database that may not be up-to-date, so it might not find a recently saved file.
B
grep notes.txt /
Why wrong: grep is used to search within file contents, not to find filenames; this would not work as intended.
C
find ~ -name notes.txt
Why wrong: This searches only the user's home directory, not the entire filesystem as required.
D
find / -name notes.txt
This searches the entire filesystem from root, making it the correct command for a full system search.

Full breakdown with real-world context →

Quick Answer

The correct answer is the command `find / -name notes.txt`. This command works because `find` is the standard Linux utility for locating files and directories, and specifying `/` as the starting point instructs it to search the entire filesystem from the root directory downward. The `-name` flag performs a case-sensitive match for the exact filename, which is appropriate here since the user saved the file as 'notes.txt' with a lowercase 'n'. On the CompTIA A+ Core 2 220-1202 exam, this question tests your understanding of filesystem navigation and command-line troubleshooting, often appearing as a scenario where a user misplaces a file. A common trap is confusing `find` with `locate`, which uses a database and may not find recently saved files, or forgetting that `-name` is case-sensitive while `-iname` ignores case. A helpful memory tip: think of the forward slash `/` as the "root of all directories"—if you want to search everything, start at the root.

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

find / -name notes.txt

Option D is correct because the `find / -name notes.txt` command starts at the root directory (`/`) and recursively searches the entire filesystem for a file named exactly 'notes.txt'. The `-name` option performs a case-sensitive match on the filename, and the starting point `/` ensures all mounted filesystems are included.

Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✗
locate notes.txt
Why it's wrong here
This command relies on a database that may not be up-to-date, so it might not find a recently saved file.
✗
grep notes.txt /
Why it's wrong here
grep is used to search within file contents, not to find filenames; this would not work as intended.
✗
find ~ -name notes.txt
Why it's wrong here
This searches only the user's home directory, not the entire filesystem as required.
✓
find / -name notes.txt
Why this is correct
This searches the entire filesystem from root, making it the correct command for a full system search.
Clue confirmation
The clue word "which command" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The exam often tests the distinction between `find` and `locate`, where candidates mistakenly choose `locate` for a real-time search without considering that the database may not be current, or they confuse the starting directory argument (e.g., `~` vs. `/`).

Trap categories for this question

Command / output trap
This command relies on a database that may not be up-to-date, so it might not find a recently saved file.

Detailed technical explanation

How to think about this question

The `find` command traverses the directory tree inode by inode, performing a stat() call on each entry, which makes it accurate for real-time searches but slower on large filesystems. The `-name` option uses shell-style wildcards (e.g., `*`, `?`), but without them it matches the exact filename. In contrast, `locate` uses a pre-built database (typically `/var/lib/mlocate/mlocate.db`) that is updated by `updatedb` via cron, so it is fast but can be stale.

KKey Concepts to Remember

Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.

TExam Day Tips

Watch for words such as best, first, most likely and least administrative effort.
Review why wrong options are wrong, not only why the correct option is correct.

Key takeaway

Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Real-world example

How this comes up in practice

A practitioner preparing for the 220-1202 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.

What to study next

Got this wrong? Here's your next step.

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

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FAQ

Questions learners often ask

What does this 220-1202 question test?

Linux Commands and File Permissions — This question tests Linux Commands and File Permissions — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: find / -name notes.txt — Option D is correct because the `find / -name notes.txt` command starts at the root directory (`/`) and recursively searches the entire filesystem for a file named exactly 'notes.txt'. The `-name` option performs a case-sensitive match on the filename, and the starting point `/` ensures all mounted filesystems are included.

What should I do if I get this 220-1202 question wrong?

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

Are there clue words in this question I should notice?

Yes — watch for: "which command". Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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