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json-yaml
Process JSON, YAML, CSV, and XML data (jq, yq, awk).
promptBeginner5 min to valuemarkdown
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Feb 12, 2026
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Process JSON, YAML, CSV, and XML data (jq, yq, awk).
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Transform and query structured data using
jqyqPretty print:
exec: cat /path/to/data.json | jq .
Extract field:
exec: cat /path/to/data.json | jq '.field.nested'
Extract from array:
exec: cat /path/to/data.json | jq '.[0].name'
Filter array:
exec: cat /path/to/data.json | jq '[.items[] | select(.status == "active")]'
Map / transform:
exec: cat /path/to/data.json | jq '[.users[] | {name: .name, email: .email}]'
Count items:
exec: cat /path/to/data.json | jq '.items | length'
Sort by field:
exec: cat /path/to/data.json | jq '.items | sort_by(.date) | reverse'
Group by:
exec: cat /path/to/data.json | jq '[.items[] | {key: .category, value: .}] | group_by(.key)'
Merge objects:
exec: jq -s '.[0] * .[1]' file1.json file2.json
Modify value in place:
exec: jq '.version = "2.0.0"' /path/to/package.json > /tmp/tmp.json && mv /tmp/tmp.json /path/to/package.json
JSON to CSV:
exec: cat /path/to/data.json | jq -r '.[] | [.name, .email, .age] | @csv'
Read field:
exec: yq '.metadata.name' /path/to/config.yaml
Set field:
exec: yq -i '.spec.replicas = 3' /path/to/deployment.yaml
Convert YAML to JSON:
exec: yq -o=json '.' /path/to/config.yaml
Convert JSON to YAML:
exec: yq -P '.' /path/to/data.json
Merge YAML files:
exec: yq eval-all '. as $item ireduce({}; . * $item)' base.yaml override.yaml
List array items:
exec: yq '.items[].name' /path/to/config.yaml
View CSV with column alignment:
exec: column -t -s',' /path/to/data.csv | head -20
Extract specific column (awk):
exec: awk -F',' '{print $1, $3}' /path/to/data.csv
Filter rows:
exec: awk -F',' '$3 > 100 {print $0}' /path/to/data.csv
Count unique values in a column:
exec: awk -F',' '{print $2}' /path/to/data.csv | sort | uniq -c | sort -rn
CSV to JSON (with jq):
exec: python3 -c "import csv, json, sys; r=csv.DictReader(open('$FILE')); print(json.dumps(list(r), indent=2))"
Format XML:
exec: xmllint --format /path/to/data.xml
XPath query:
exec: xmllint --xpath '//element/@attr' /path/to/data.xml
XML to JSON (with yq):
exec: yq -p=xml -o=json '.' /path/to/data.xml
Read TOML:
exec: yq -p=toml '.' /path/to/config.toml
TOML to JSON:
exec: yq -p=toml -o=json '.' /path/to/config.toml
Parse inline:
exec: echo '{"name":"test","value":42}' | jq '.name'
Build JSON:
exec: jq -n --arg name "test" --arg val "42" '{name: $name, value: ($val | tonumber)}'
jqapt install jqbrew install jqyqbrew install yqsnap install yqxmllintlibxml2-utilsjq --streamyq --stream