When Running the Command Sed -E "S/a/b/" /Tmp/file >/Tmp/file While

question 138

Multiple Choice

When running the command sed -e "s/a/b/" /tmp/file >/tmp/file While /tmp/file contains data, why is /tmp/file empty afterwards?

• A) The file order is incorrect. The destination file must be mentioned before the command to ensure redirection.
• B) The command sed did not match anything in that file therefore the output is empty.
• C) When the shell establishes the redirection it overwrites the target file before the redirected command starts and opens it for reading.
• D) Redirection for shell commands do not work using the > character. It only works using the | character instead.

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Definitions:

Reinforcement

A process in behavioral psychology used to increase the likelihood of a specific behavior by adding or removing stimuli following the behavior.

Consciousness

Consciousness is the state of being awake and aware of one's surroundings, thoughts, feelings, and experiences.

Continuous Stream

The ongoing, uninterrupted flow of data or information in real-time.

Perceptions

The method individuals use to structure and understand their sensory observations, attributing significance to the world around them.