LPI
010-160 · Question #40
010-160 Question #40: Real Exam Question with Answer & Explanation
The correct answer is C: /etc/passwd. The line root:x:0:0::/root:/bin/bash uses the colon-delimited format unique to /etc/passwd, which stores username, password placeholder, UID, GID, GECOS, home directory, and login shell.
Question
The following line is found in which system file?
root:x:0:0::/root:/bin/bash
Options
- A/etc/user.conf
- B/etc/shadow
- C/etc/passwd
- D/usr/bin/shadow
- E/etc/password
Explanation
The line root:x:0:0::/root:/bin/bash uses the colon-delimited format unique to /etc/passwd, which stores username, password placeholder, UID, GID, GECOS, home directory, and login shell.
Common mistakes.
- A. /etc/user.conf is not a standard Linux system file and does not store the colon-delimited user account database.
- B. /etc/shadow stores hashed passwords and account aging data in a different multi-field format and is not the file that contains shell or home directory information.
- D. /usr/bin/shadow does not exist as a standard Linux system file - the shadow password file is located at /etc/shadow.
- E. /etc/password does not exist as a standard Linux system file - the correct filename is /etc/passwd.
Concept tested. Linux /etc/passwd file format and user account storage
Reference. https://man7.org/linux/man-pages/man5/passwd.5.html
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