diff file1 file2 (line-by-line). diff -u (unified). diff -r dir1 dir2 (recursive). cmp (byte-by-byte; exit 0 if identical). comm -3 <(sort f1) <(sort f2) for sorted common lines. Large files: md5sum/sha256sum first to skip diff if identical. WHY: diff for review; checksums for...
This easy-level General/Other question appears frequently in data engineering interviews at companies like Citi. While less common, it tests deeper understanding that distinguishes strong candidates.
Start by clearly defining the core concept being asked about. Interviewers want to see that you understand the fundamentals before diving into implementation details. Structure your answer with a definition, then explain the practical application with a concise example.
diff file1 file2 (line-by-line). diff -u (unified). diff -r dir1 dir2 (recursive). cmp (byte-by-byte; exit 0 if identical). comm -3 <(sort f1) <(sort f2) for sorted common lines. Large files: md5sum/sha256sum first to skip diff if identical. WHY: diff for review; checksums for binary or quick equality. COST: diff on huge files is slow; checksum first.
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Analyze My Answer — FreeAccording to DataEngPrep.tech, this is one of the most frequently asked General/Other interview questions, reported at 1 company. DataEngPrep.tech maintains a curated database of 1,863+ real data engineering interview questions across 7 categories, verified by industry professionals.