Join lines of text from multiple files based on a common field. Use for relational data operations similar to SQL JOIN on text files.
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Install skill "join-tool" with this command: npx skills add dinghaibin/join-tool
Merge lines from two sorted files by matching a common join field. Similar to database JOIN operations but works on plain text files with field separators.
join-tool [options] file1 file2
-1 N: Join on field N of file 1-2 N: Join on field N of file 2-t char: Use char as field separator-a 1: Show unpaired lines from file 1join-tool users.txt roles.txt
join-tool -t ',' -1 2 -2 1 customers.csv orders.csv
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