74 lines
1.5 KiB
Markdown
74 lines
1.5 KiB
Markdown
# CLI Examples
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All examples use this example [input file](https://github.com/zemirco/json2csv/blob/master/test/fixtures/json/default.json).
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## Input file and specify fields
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```sh
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$ json2csv -i input.json -f carModel,price,color
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carModel,price,color
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"Audi",10000,"blue"
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"BMW",15000,"red"
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"Mercedes",20000,"yellow"
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"Porsche",30000,"green"
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```
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## Input file, specify fields and use pretty logging
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```sh
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$ json2csv -i input.json -f carModel,price,color -p
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```
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## Generating CSV containing only specific fields
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```sh
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$ json2csv -i input.json -f carModel,price,color -o out.csv
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$ cat out.csv
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carModel,price,color
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"Audi",10000,"blue"
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"BMW",15000,"red"
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"Mercedes",20000,"yellow"
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"Porsche",30000,"green"
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```
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Same result will be obtained passing the fields config as a file.
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```sh
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$ json2csv -i input.json -c fieldsConfig.json -o out.csv
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```
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where the file `fieldsConfig.json` contains
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```json
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["carModel", "price", "color"]
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```
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## Read input from stdin
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```sh
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$ json2csv -f price
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[{"price":1000},{"price":2000}]
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```
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Hit <kbd>Enter</kbd> and afterwards <kbd>CTRL</kbd> + <kbd>D</kbd> to end reading from stdin. The terminal should show
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```sh
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price
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1000
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2000
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```
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## Appending to existing CSV
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Sometimes you want to add some additional rows with the same columns.
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This is how you can do that.
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```sh
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# Initial creation of csv with headings
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$ json2csv -i test.json -f name,version > test.csv
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# Append additional rows
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$ json2csv -i test.json -f name,version --no-header >> test.csv
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```
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