During a security evaluation, you have a file that contains rows in the format user:hashed_value:metadata. Your goal is to generate a new file that includes only the user field from each line. Which approach meets this goal?
One answer uses a command that splits the text on the colon separator and extracts the first field, directing it to a new file. This correctly pulls only the user field. Other answers do not isolate the correct information or do not use the right options to parse the file. Using cut with the first field selected is the reliable way to handle lines formatted with colons, ensuring the usernames are captured and stored accurately.
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What does the 'cut' command do in Linux?
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What is the role of the '-d' and '-f' options in the 'cut' command?
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Why are the other options in the question incorrect for isolating the user field?