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:

Total Market Value

The combined value of all shares of stock, bonds, or other securities issued by a company, calculated by multiplying the current price per share by the total number of shares outstanding.

Increased Liquidity

The state or condition of having more cash or easily convertible into cash assets, making it easier to meet short-term obligations.

Stock Price

The cost of purchasing a share of a company, as determined by supply and demand in the market.

Residual Dividend Policy

A strategy where a company pays dividends out of the residual or leftover equity only after all project capital needs are met.