[RPi] 安裝JQ

照README做就可以了

git clone https://github.com/stedolan/jq
git submodule update --init # if building from git to get oniguruma
autoreconf -fi              # if building from git
./configure --with-oniguruma=builtin
make 
sudo make install

使用，假設有個輸出是json_str，第一個索引是.results，就可以這樣用

json_str | ./jq '.results'