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Web Development and Unix Fundamentals
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What is the command to find the differences in the lines containing "1999" between the files orig.txt and copy.txt, and add the result to file result.1999?
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A
diff orig.txt copy.txt | grep 1999 >> result.1999
💡 Explanation:
The command 'diff orig.txt copy.txt | grep 1999 >> result.1999' correctly finds differences between files, filters for lines containing '1999', and appends results to the output file. The >> operator appends rather than overwrites. Option A uses invalid -d flag, D uses incorrect redirection <<, and C doesn't compare files.