wget https://github.com/stedolan/jq/releases/download/jq-1.5/jq-linux64
2、添加可执行权限chmod +x jq-linux64
3、添加到环境变量里面mv jq-linux64 /usr/bin/
4、改名mv /usr/bin/jq-linux64 /usr/bin/jq
5、可以用来用法：
1、cat json.test |jq “.name”"xueyuan"2、cat json.txt |jq 3、检查文本：jq ‘.’ json_file > /dev/null 4、支持切片jq “.skills[0:2]” json.test 5、支持多个索引值查找
[root@localhost ~]# jq “.skills,.age” json.test
[
“C/C++”,
“Python”,
“Golang”,
“Node.js”
]
21
[root@localhost ~]# echo 1 | jq ‘(.+2)*5’
15
[root@localhost ~]# cat json.test |jq ‘.[] |length’
4
21
11
7
24
[root@localhost ~]# cat json.test |jq ‘.’
{
“skills”: [
“C/C++”,
“Python”,
“Golang”,
“Node.js”
],
“age”: 21,
“birthday”: “10th August”,
“name”: “xueyuan”,
“email”: “im.hexueyuan@outlook.com”
}
[root@localhost ~]#jq ‘.[]’ json.txt
[root@localhost ~]# cat json.test |jq ‘.keys’ 这个是键值为key的为空
null
[root@localhost ~]# cat json.test |jq ‘keys’
[
“age”,
“birthday”,
“email”,
“name”,
“skills”
]
[root@localhost ~]# cat json.test |jq ‘has(“name”)’
true
[root@localhost ~]# cat json.test |jq ‘has(“nname”)’
false
