[Solved] Which of the following lines correctly shows the format of a typical /etc/shadow entry? — Ans: username:$6$randomsalt$encryptedpassword:18000:0:99999:7::: | Linux CLI

Linux CLI - Users and Groups

Which of the following lines correctly shows the format of a typical /etc/shadow entry?

Ausername:x:1000:1000:User Name:/home/user:/bin/bash

Busername:$6$randomsalt$encryptedpassword:18000:0:99999:7:::

Cusername:password:1000:1000:User Name:/home/user:/bin/bash

Dusername:encryptedpassword:1000:1000:User Name:/home/user:/bin/bash

Step-by-Step Solution

Solution:

Step 1: Identify /etc/shadow format
The /etc/shadow file stores encrypted passwords and related info. The password field looks like $6$randomsalt$encryptedpassword for SHA-512 encryption.
Step 2: Compare options
The line username:$6$randomsalt$encryptedpassword:18000:0:99999:7::: matches the shadow file format with encrypted password (indicated by $6$) and password aging fields separated by colons. The other options resemble /etc/passwd format or have incorrect password fields.
Final Answer:
username:$6$randomsalt$encryptedpassword:18000:0:99999:7::: -> Option B
Quick Check:
/etc/shadow entries have encrypted passwords with $ signs [OK]

Quick Trick: Look for $ signs and many colon-separated fields in shadow entries [OK]

Common Mistakes:

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Which of the following lines correctly shows the format of a typical /etc/shadow entry?