daff

Diff and patch CSV, TSV, and JSON table files with human-readable output.

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Diff and patch tables

daff

compare two CSV files and show differences$ daff diff file1.csv file2.csv

show table differences in HTML format for viewing in browser$ daff diff file1.csv file2.csv --output=diff.html

apply changes from one spreadsheet to another$ daff patch original.csv changes.csv output.csv

convert spreadsheet format to CSV for easier diffing$ daff convert data.xlsx data.csv

generate a patch file showing table modifications between versions$ daff diff old_data.csv new_data.csv > table.patch