linux下json工具jq

1、查看json文件

[root@VM-1-10-11 f46c19f56252a74a46fd30026001e62cc5ecadd04bc9a80c47f6fd5f9dc0586b]# pwd
/data1/docker/containers/f46c19f56252a74a46fd30026001e62cc5ecadd04bc9a80c47f6fd5f9dc0586b
[root@VM-1-10-11 f46c19f56252a74a46fd30026001e62cc5ecadd04bc9a80c47f6fd5f9dc0586b]# ls
config.v2.json  hostconfig.json  hostname  hosts  resolv.conf  resolv.conf.hash  secrets  shm
[root@VM-1-10-11 f46c19f56252a74a46fd30026001e62cc5ecadd04bc9a80c47f6fd5f9dc0586b]#
[root@VM-1-10-11 f46c19f56252a74a46fd30026001e62cc5ecadd04bc9a80c47f6fd5f9dc0586b]# cat config.v2.json
{"StreamConfig":{},"State":{"Running":true,"Paused":false,"Restarting":false,"OOMKilled":false,"RemovalInProgress":false,"Dead":false,"Pid":9173,"StartedAt":"2017-02-09T03:46:15.709079233Z","FinishedAt":"0001-01-01T00:00:00Z","Health":null},"ID":"f46c19f56252a74a46fd30026001e62cc5ecadd04bc9a80c47f6fd5f9dc0586b","Created":"2017-02-08T13:33:52.903241912Z","Managed":false,"Path":"/sbin/init","Args":[],"Config":{"Hostname":"shibing.zhao-162-200","Domainname":"","User":"","AttachStdin":true,"AttachStdout":true,"AttachStderr":true,"Tty":true,"OpenStdin":true,"StdinOnce":true,"Env":["IDC=beebank","CONTAINER_NAME=shibing.zhao_172.16.162.200"],"Cmd":["/sbin/init"],"Image":"migrate.i.beebank.com:5000/shibing.zhao_172.16.162.200","Volumes":null,"WorkingDir":"","Entrypoint":null,"OnBuild":null,"Labels":{}},"Image":"sha256:a2b61eaadc77aff698d7c9ebc1f0837ee0e5be1942f81b528f7a56e2e3ca257b","NetworkSettings":{"Bridge":"","SandboxID":"8fe25ef4a2a25902d1a56ad1a3a096d24e5955d4045fb4b34429c6575e570bb4","HairpinMode":false,"LinkLocalIPv6Address":"","LinkLocalIPv6PrefixLen":0,"Networks":{"none":{"IPAMConfig":null,"Links":null,"Aliases":null,"NetworkID":"f989ab193573c45f2d337e5752334afcb5b49d4b97efb2299743c4de3311d97a","EndpointID":"fc95bc1a8306daff737d1dbc135bd107b83226a5e01cdecb8b68b5c7f4dde249","Gateway":"","IPAddress":"","IPPrefixLen":0,"IPv6Gateway":"","GlobalIPv6Address":"","GlobalIPv6PrefixLen":0,"MacAddress":""}},"Service":null,"Ports":{},"SandboxKey":"/var/run/docker/netns/8fe25ef4a2a2","SecondaryIPAddresses":null,"SecondaryIPv6Addresses":null,"IsAnonymousEndpoint":false},"LogPath":"","Name":"/shibing.zhao_172.16.162.200","Driver":"devicemapper","MountLabel":"","ProcessLabel":"","RestartCount":0,"HasBeenStartedBefore":false,"HasBeenManuallyStopped":false,"MountPoints":{"/data2":{"Source":"/data1/docker_volume/shibing.zhao_172.16.162.200/data","Destination":"/data2","RW":true,"Name":"","Driver":"","Relabel":"","Propagation":"rprivate","Named":false,"ID":""},"/data3":{"Source":"/data1/docker_volume/user/shibing.zhao","Destination":"/data3","RW":true,"Name":"","Driver":"","Relabel":"","Propagation":"rprivate","Named":false,"ID":""},"/etc/hosts":{"Source":"/data1/docker_volume/shibing.zhao_172.16.162.200/hosts","Destination":"/etc/hosts","RW":true,"Name":"","Driver":"","Relabel":"","Propagation":"rprivate","Named":false,"ID":""},"/etc/mnt":{"Source":"/data1/docker_volume/shibing.zhao_172.16.162.200/config","Destination":"/etc/mnt","RW":false,"Name":"","Driver":"","Relabel":"ro","Propagation":"rprivate","Named":false,"ID":""},"/etc/pam_ldap.conf":{"Source":"/etc/pam_ldap.conf.beebank","Destination":"/etc/pam_ldap.conf","RW":false,"Name":"","Driver":"","Relabel":"ro","Propagation":"rprivate","Named":false,"ID":""},"/etc/resolv.conf":{"Source":"/etc/resolv.conf","Destination":"/etc/resolv.conf","RW":false,"Name":"","Driver":"","Relabel":"ro","Propagation":"rprivate","Named":false,"ID":""},"/etc/yum.repos.d/bee.repo":{"Source":"/data1/docker_volume/beebank.repo","Destination":"/etc/yum.repos.d/bee.repo","RW":false,"Name":"","Driver":"","Relabel":"ro","Propagation":"rprivate","Named":false,"ID":""}},"AppArmorProfile":"","HostnamePath":"/data1/docker/containers/f46c19f56252a74a46fd30026001e62cc5ecadd04bc9a80c47f6fd5f9dc0586b/hostname","HostsPath":"/data1/docker_volume/shibing.zhao_172.16.162.200/hosts","ShmPath":"/data1/docker/containers/f46c19f56252a74a46fd30026001e62cc5ecadd04bc9a80c47f6fd5f9dc0586b/shm","ResolvConfPath":"/etc/resolv.conf","SeccompProfile":"","NoNewPrivileges":false}
[root@VM-1-10-11 f46c19f56252a74a46fd30026001e62cc5ecadd04bc9a80c47f6fd5f9dc0586b]#

　

2、使用jq解析json文件内容

[root@VM-1-10-11 f46c19f56252a74a46fd30026001e62cc5ecadd04bc9a80c47f6fd5f9dc0586b]# cat config.v2.json |jq
{
  "StreamConfig": {},
  "State": {
    "Running": true,
    "Paused": false,
    "Restarting": false,
    "OOMKilled": false,
    "RemovalInProgress": false,
    "Dead": false,
    "Pid": 9173,
    "StartedAt": "2017-02-09T03:46:15.709079233Z",
    "FinishedAt": "0001-01-01T00:00:00Z",
    "Health": null
  },
  "ID": "f46c19f56252a74a46fd30026001e62cc5ecadd04bc9a80c47f6fd5f9dc0586b",
  "Created": "2017-02-08T13:33:52.903241912Z",
  "Managed": false,
  "Path": "/sbin/init",
  "Args": [],
  "Config": {
    "Hostname": "shibing.zhao-162-200",
    "Domainname": "",
    "User": "",
    "AttachStdin": true,
    "AttachStdout": true,
    "AttachStderr": true,
    "Tty": true,
    "OpenStdin": true,
    "StdinOnce": true,
    "Env": [
      "IDC=beebank",
      "CONTAINER_NAME=shibing.zhao_172.16.162.200"
    ],
    "Cmd": [
      "/sbin/init"
    ],
    "Image": "migrate.i.beebank.com:5000/shibing.zhao_172.16.162.200",
    "Volumes": null,
    "WorkingDir": "",
    "Entrypoint": null,
    "OnBuild": null,
    "Labels": {}
  },
  "Image": "sha256:a2b61eaadc77aff698d7c9ebc1f0837ee0e5be1942f81b528f7a56e2e3ca257b",
  "NetworkSettings": {
    "Bridge": "",
    "SandboxID": "8fe25ef4a2a25902d1a56ad1a3a096d24e5955d4045fb4b34429c6575e570bb4",
    "HairpinMode": false,
    "LinkLocalIPv6Address": "",
    "LinkLocalIPv6PrefixLen": 0,
    "Networks": {
      "none": {
        "IPAMConfig": null,
        "Links": null,
        "Aliases": null,
        "NetworkID": "f989ab193573c45f2d337e5752334afcb5b49d4b97efb2299743c4de3311d97a",
        "EndpointID": "fc95bc1a8306daff737d1dbc135bd107b83226a5e01cdecb8b68b5c7f4dde249",
        "Gateway": "",
        "IPAddress": "",
        "IPPrefixLen": 0,
        "IPv6Gateway": "",
        "GlobalIPv6Address": "",
        "GlobalIPv6PrefixLen": 0,
        "MacAddress": ""
      }
    },
    "Service": null,
    "Ports": {},
    "SandboxKey": "/var/run/docker/netns/8fe25ef4a2a2",
    "SecondaryIPAddresses": null,
    "SecondaryIPv6Addresses": null,
    "IsAnonymousEndpoint": false
  },
  "LogPath": "",
  "Name": "/shibing.zhao_172.16.162.200",
  "Driver": "devicemapper",
  "MountLabel": "",
  "ProcessLabel": "",
  "RestartCount": 0,
  "HasBeenStartedBefore": false,
  "HasBeenManuallyStopped": false,
  "MountPoints": {
    "/data2": {
      "Source": "/data1/docker_volume/shibing.zhao_172.16.162.200/data",
      "Destination": "/data2",
      "RW": true,
      "Name": "",
      "Driver": "",
      "Relabel": "",
      "Propagation": "rprivate",
      "Named": false,
      "ID": ""
    },
    "/data3": {
      "Source": "/data1/docker_volume/user/shibing.zhao",
      "Destination": "/data3",
      "RW": true,
      "Name": "",
      "Driver": "",
      "Relabel": "",
      "Propagation": "rprivate",
      "Named": false,
      "ID": ""
    },
    "/etc/hosts": {
      "Source": "/data1/docker_volume/shibing.zhao_172.16.162.200/hosts",
      "Destination": "/etc/hosts",
      "RW": true,
      "Name": "",
      "Driver": "",
      "Relabel": "",
      "Propagation": "rprivate",
      "Named": false,
      "ID": ""
    },
    "/etc/mnt": {
      "Source": "/data1/docker_volume/shibing.zhao_172.16.162.200/config",
      "Destination": "/etc/mnt",
      "RW": false,
      "Name": "",
      "Driver": "",
      "Relabel": "ro",
      "Propagation": "rprivate",
      "Named": false,
      "ID": ""
    },
    "/etc/pam_ldap.conf": {
      "Source": "/etc/pam_ldap.conf.beebank",
      "Destination": "/etc/pam_ldap.conf",
      "RW": false,
      "Name": "",
      "Driver": "",
      "Relabel": "ro",
      "Propagation": "rprivate",
      "Named": false,
      "ID": ""
    },
    "/etc/resolv.conf": {
      "Source": "/etc/resolv.conf",
      "Destination": "/etc/resolv.conf",
      "RW": false,
      "Name": "",
      "Driver": "",
      "Relabel": "ro",
      "Propagation": "rprivate",
      "Named": false,
      "ID": ""
    },
    "/etc/yum.repos.d/bee.repo": {
      "Source": "/data1/docker_volume/beebank.repo",
      "Destination": "/etc/yum.repos.d/bee.repo",
      "RW": false,
      "Name": "",
      "Driver": "",
      "Relabel": "ro",
      "Propagation": "rprivate",
      "Named": false,
      "ID": ""
    }
  },
  "AppArmorProfile": "",
  "HostnamePath": "/data1/docker/containers/f46c19f56252a74a46fd30026001e62cc5ecadd04bc9a80c47f6fd5f9dc0586b/hostname",
  "HostsPath": "/data1/docker_volume/shibing.zhao_172.16.162.200/hosts",
  "ShmPath": "/data1/docker/containers/f46c19f56252a74a46fd30026001e62cc5ecadd04bc9a80c47f6fd5f9dc0586b/shm",
  "ResolvConfPath": "/etc/resolv.conf",
  "SeccompProfile": "",
  "NoNewPrivileges": false
}

3、获取指定的key对应的value

[root@BASE-SERVER-1-10-10 81f7f11a8b03397d8153fdaf975a78157afee9b2279607132711e0234dbc5f3a]# cat config.v2.json |jq .State
{
  "Running": true,
  "Paused": false,
  "Restarting": false,
  "OOMKilled": true,
  "RemovalInProgress": false,
  "Dead": false,
  "Pid": 114836,
  "StartedAt": "2017-02-27T09:36:00.772375786Z",
  "FinishedAt": "2017-02-27T09:35:41.564086153Z",
  "Health": null
}
[root@BASE-SERVER-1-10-10 81f7f11a8b03397d8153fdaf975a78157afee9b2279607132711e0234dbc5f3a]# cat config.v2.json |jq .State.Running
true