Quick Answer
The correct command is `useradd -d /data/users -e 2025-12-31 john`. This works because the `-d` flag explicitly sets the user's home directory to the specified path, overriding the default `/home/john`, while the `-e` flag defines the account expiry date in YYYY-MM-DD format, which directly populates the `EXPIRE_DATE` field in `/etc/shadow` and locks the account after that date. On the LFCS exam, this tests your understanding of user creation with non-default parameters, a common scenario for system administrators managing shared storage or temporary accounts. A frequent trap is confusing `-d` with `-m` (which creates the home directory if it doesn’t exist) or using `-e` with an incorrect date format like MM/DD/YYYY. Remember the mnemonic: “Directory and Expiry” for `-d` and `-e`—both are single-letter flags that directly map to the user’s filesystem and account lifecycle.
This LFCS practice question tests your understanding of user and group management. 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 system administrator needs to create a user 'john' with a home directory in /data/users and an expiry date of 2025-12-31. Which command accomplishes this?
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.
useradd -d /data/users -c 2025-12-31 john
Why wrong: -c sets the GECOS comment, not expiry.
adduser --home /data/users --expiredate 2025-12-31 john
Why wrong: adduser is distribution-specific and interactive; not the standard command.
useradd -d /data/users -e 2025-12-31 john
Correctly sets home directory and expiry.
useradd -m -e 2025-12-31 john
Why wrong: -m creates the home directory in /home/john by default, not /data/users.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
useradd -d /data/users -e 2025-12-31 john
Option C is correct because the `useradd` command with `-d /data/users` sets the home directory to the specified path, and `-e 2025-12-31` sets the account expiry date in YYYY-MM-DD format. The `-e` flag directly corresponds to the `EXPIRE_DATE` field in `/etc/shadow`, which controls when the account becomes locked.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
useradd -d /data/users -c 2025-12-31 john
Why it's wrong here
-c sets the GECOS comment, not expiry.
adduser --home /data/users --expiredate 2025-12-31 john
Why it's wrong here
adduser is distribution-specific and interactive; not the standard command.
useradd -d /data/users -e 2025-12-31 john
Why this is correct
Correctly sets home directory and expiry.
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.
useradd -m -e 2025-12-31 john
Why it's wrong here
-m creates the home directory in /home/john by default, not /data/users.
Common exam traps
The trap here is that candidates confuse `-c` (comment) with `-e` (expiry) or assume `adduser` supports the same long options as `useradd`, leading them to pick A or B, while D is tempting because it includes `-m` but misses the required `-d` to specify the custom path.
Trap categories for this question
Command / output trap
adduser is distribution-specific and interactive; not the standard command.
Detailed technical explanation
The `-e` option in `useradd` writes the expiry date to the eighth field of `/etc/shadow` as days since 1970-01-01 (epoch). The `-d` option sets the home directory in `/etc/passwd` but does not create it unless `-m` is also used; in this scenario, the administrator likely expects the directory to exist already or will create it manually. A real-world pitfall is that if `-m` is omitted with `-d`, the home directory is not automatically created, which can cause login failures if the directory is missing.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
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FAQ
User and Group Management — This question tests User and Group Management — Read the scenario before looking for a memorised answer..
The correct answer is: useradd -d /data/users -e 2025-12-31 john — Option C is correct because the `useradd` command with `-d /data/users` sets the home directory to the specified path, and `-e 2025-12-31` sets the account expiry date in YYYY-MM-DD format. The `-e` flag directly corresponds to the `EXPIRE_DATE` field in `/etc/shadow`, which controls when the account becomes locked.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
This LFCS practice question is part of Courseiva's free Linux Foundation certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the LFCS exam.
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