Linux系列：jq删除双引号的方法 -r

#带-r选项

curl 10.0.0.113:19200/_cluster/health 2>/dev/null | jq -r .cluster_name

#不带-r选项

curl 10.0.0.113:19200/_cluster/health 2>/dev/null | jq .cluster_name

#不带-r选项

echo '{"a":"nio4444","b":"nio44442"} | jq .a

"nio4444"

#带-r选项

echo '{"a":"nio4444","b":"nio44442"} | jq -r .a

nio4444