The answer is to display all usernames and their associated password hashes. This command is correct because `cat /etc/shadow` outputs the shadow file, which stores user account details including the encrypted password hash in the second colon-delimited field. By setting the field separator with `-F:` and printing `$1` and `$2`, `awk` extracts only the username and its corresponding hash, a classic post-exploitation technique used to gather credentials for offline cracking. On the CompTIA PenTest+ PT0-002 exam, this tests your understanding of Linux enumeration commands and the structure of critical system files; a common trap is confusing the shadow file with `/etc/passwd`, which stores password placeholders (like `x`) rather than actual hashes. Remember the memory tip: “Shadow hides the hash in field two, so awk’s `$2` is the key to crack through.”
PT0-002 Tools and Code Analysis Practice Question
This PT0-002 practice question tests your understanding of tools and code analysis. 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 penetration tester is analyzing a Bash script used for post-exploitation enumeration. The script contains the line: `cat /etc/shadow | awk -F: '{print $1, $2}'`. What is the primary purpose of this command?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "primary"
Why it matters: Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Display all usernames and their associated password hashes
The command `cat /etc/shadow | awk -F: '{print $1, $2}'` reads the shadow file, which stores user account information including password hashes. The `-F:` sets the field separator to colon, and `{print $1, $2}` outputs the first field (username) and second field (password hash). This is a common post-exploitation technique to extract password hashes for offline cracking.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Display all usernames and their associated password hashes
Why this is correct
Correct. The command reads /etc/shadow and outputs each username and its password hash.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Show the number of users in the system
Why it's wrong here
This command prints lines rather than counting them; `wc -l` would show the count.
✗
Extract the usernames and home directories
Why it's wrong here
Home directories are stored in /etc/passwd, not in /etc/shadow.
✗
List the account expiration dates
Why it's wrong here
Account expiration information is typically in later fields of /etc/shadow, not the first two.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse `/etc/shadow` with `/etc/passwd`, which stores user metadata like home directories, leading them to incorrectly select option C instead of recognizing the hash extraction purpose.
Trap categories for this question
Command / output trap
This command prints lines rather than counting them; `wc -l` would show the count.
Detailed technical explanation
How to think about this question
The `/etc/shadow` file stores password hashes in the second colon-separated field, using formats like `$y$` (yescrypt) or `$6$` (SHA-512) on modern Linux systems. Extracting these hashes allows offline brute-force or dictionary attacks using tools like John the Ripper or Hashcat, bypassing account lockout policies. Note that the hash field may contain `!` or `*` for locked or disabled accounts, which are not valid hashes.
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 security team runs a vulnerability scan on a web application and discovers an unpatched SQL injection flaw. The team prioritises remediation by CVSS score — critical flaws are patched within 24 hours, high within 7 days. Questions like this test whether you understand vulnerability management processes, scanning tools, and remediation prioritisation.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this PT0-002 question in full detail.
Tools and Code Analysis — This question tests Tools and Code Analysis — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Display all usernames and their associated password hashes — The command `cat /etc/shadow | awk -F: '{print $1, $2}'` reads the shadow file, which stores user account information including password hashes. The `-F:` sets the field separator to colon, and `{print $1, $2}` outputs the first field (username) and second field (password hash). This is a common post-exploitation technique to extract password hashes for offline cracking.
What should I do if I get this PT0-002 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: "primary". Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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