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XK0-005 Domain 3: Scripting, Containers, and Automation

Which shell variable is exit code of last command?

Multiple choice — select one answer

Answer choices

  1. a. $?
  2. b. Follow change control and monitor metrics
  3. c. FROM
  4. d. #!/bin/bash

Architectural breakdown & explanation

$? holds last command return status.

Correct answer(s): a. $?

Exam domain: Domain 3: Scripting, Containers, and Automation (29% weight on the official guide).

Official documentation & study links

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