最後更新: 2017-12-20

介紹

jq is sed for JSON

Command-line JSON processor

jq is written in portable C, and it has zero runtime dependencies.

HomePage: https://stedolan.github.io/jq/

 

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Install

 

apt-get install jq

# The simplest filter is "." which echoes its input, but pretty-printed:

echo '{"hello":{ "greetings":"to you"}}' | jq .

jq '.' file.json

# ".field" which pulls field out of each record:
# .field1.field2 for nested hashes

echo '{"hello":{ "greetings":"to you"}}' | jq .hello

echo '{"hello":{ "greetings":"to you"}}' | jq .hello.greetings

# array

echo '["a","b","c","d","e"]' | jq '.[2:4]'

# go “into” the array

jq ".[]"

# filter by text

jq ".[] | .text"