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20 lines
535 B
Markdown
20 lines
535 B
Markdown
# join
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> Join lines of two sorted files on a common field.
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> More information: <https://www.gnu.org/software/coreutils/manual/html_node/join-invocation.html>.
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- Join two files on the first (default) field:
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`join {{file1}} {{file2}}`
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- Join two files using a comma (instead of a space) as the field separator:
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`join -t {{','}} {{file1}} {{file2}}`
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- Join field3 of file1 with field1 of file2:
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`join -1 {{3}} -2 {{1}} {{file1}} {{file2}}`
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- Produce a line for each unpairable line for file1:
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`join -a {{1}} {{file1}} {{file2}}`
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