select-by-key

A command that divides input into keys and values, and returns the values corresponding to the keys selected in the pipeline.

How to install

go install github.com/minoritea/select-by-key

How to use

echo "key value" | select-by-key -- grep key #> value

1. Pass delimiter-separated key-value pairs or JSON of an object to the standard input.

• If -json option is given, the input will be interpreted as a JSON string.
• Otherwise, the input will be divided into keys and values by the first delimiter for each lines.
• The delimiter is specified with the -d option and defaults to space.

2. Pass a filter command and arguments after the "--".

• The filter command must take keys and output the selected keys.

3. Then select-by-key will output the values corresponding to the selected keys.

License

MIT License(see LICENSE file).