010-150 · Question #55
What does the exit status 0 indicate about a process?
The correct answer is A. The process ended without any problems. Exit status 0 is the universal Unix/Linux convention for successful process completion. Any non-zero exit status indicates some form of error or abnormal termination.
Question
What does the exit status 0 indicate about a process?
Options
- AThe process ended without any problems.
- BThe process was terminated by the user.
- CThe process couldn't finish correctly.
- DThe process waited for an input but got none.
- EThe process finished in time.
How the community answered
(14 responses)- A71% (10)
- B14% (2)
- C7% (1)
- E7% (1)
Why each option
Exit status 0 is the universal Unix/Linux convention for successful process completion. Any non-zero exit status indicates some form of error or abnormal termination.
By POSIX convention, an exit status of 0 means the process completed successfully without errors. This is the standard return value a program uses to signal to the shell or calling process that execution finished as expected, with no errors encountered.
User termination (e.g., via SIGTERM or SIGINT) typically results in a non-zero exit status, often 130 for Ctrl+C.
A process that could not finish correctly returns a non-zero exit status (commonly 1 or higher) to signal failure.
Waiting for input with no response would typically cause the process to block or exit with a non-zero code, not 0.
There is no standard exit code specifically meaning 'finished in time'; timing is not conveyed by exit status 0.
Concept tested: Unix process exit status codes and conventions
Source: https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_08_02
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