mirror of https://github.com/CrimsonTome/tldr.git
33 lines
1.0 KiB
Markdown
33 lines
1.0 KiB
Markdown
# mlr
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> Miller is like `awk`, `sed`, `cut`, `join`, and `sort` for name-indexed data such as CSV, TSV, and tabular JSON.
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> More information: <https://johnkerl.org/miller/doc>.
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- Pretty-print a CSV file in a tabular format:
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`mlr --icsv --opprint cat {{example.csv}}`
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- Receive JSON data and pretty print the output:
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`echo '{"hello":"world"}' | mlr --ijson --opprint cat`
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- Sort alphabetically on a field:
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`mlr --icsv --opprint sort -f {{field}} {{example.csv}}`
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- Sort in descending numerical order on a field:
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`mlr --icsv --opprint sort -nr {{field}} {{example.csv}}`
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- Convert CSV to JSON, performing calculations and display those calculations:
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`mlr --icsv --ojson put '${{newField1}} = ${{oldFieldA}}/${{oldFieldB}}' {{example.csv}}`
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- Receive JSON and format the output as vertical JSON:
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`echo '{"hello":"world", "foo":"bar"}' | mlr --ijson --ojson --jvstack cat`
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- Filter lines of a compressed CSV file treating numbers as strings:
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`mlr --prepipe 'gunzip' --csv filter -S '${{fieldName}} =~ "{{regular_expression}}"' {{example.csv.gz}}`
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