Linux · Flashcard
Which command makes a shell variable available to programs started from that shell?
- Aexport, which marks the variable for inheritance by child processes
- Bdeclare, which removes the variable from the current shell session
- Creadonly, which prints every variable currently held by the shell
- Dunset, which copies the variable into the parent process memory
Why this is the answer
export promotes a variable into the environment so child processes inherit it. unset does the opposite — it deletes a variable rather than exporting it.
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