Which of the following commands disables the automatic password expiry for the user usera?

Question

Options

• Achage --maxdays none usera
• Bchage --maxdays 99 usera
• Cchage --maxdays -1 usera
• Dchage --lastday none usera
• Echage --lastday 0 usera

• B
  3% (1)
• C
  89% (34)
• D
  5% (2)
• E
  3% (1)

Explanation

chage --maxdays -1 usera disables password expiry because -1 is the special sentinel value that tells the system "no maximum age limit" - the password never expires. A is wrong because --maxdays expects a numeric argument, not the string none. B sets expiry to 99 days, which is a valid but non-infinite limit. D and E use --lastday, which sets the last password change date (or a forced expiry date), not the maximum age interval - --lastday 0 actually forces immediate expiry on next login.

Memory tip: Think of -1 as "minus infinity" - it removes the upper bound entirely. Whenever a Linux tool needs "no limit," -1 is almost always the answer.

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