eggyer@ubuntu:/usr/local/dockerfile/df_test1$ docker version
Client:
 Version:   1.9.1
 API version: 1.21
 Go version:  go1.4.3
 Git commit:  a34a1d5
 Built:    Fri Nov 20 17:56:04 UTC 2015
 OS/Arch:   linux/amd64

Server:
 Version:   1.9.1
 API version: 1.21
 Go version:  go1.4.3
 Git commit:  a34a1d5
 Built:    Fri Nov 20 17:56:04 UTC 2015
 OS/Arch:   linux/amd64

eggyer@ubuntu:/usr/local/dockerfile/df_test1$ nc -U /var/run/docker.sock
GET /info HTTP/1.1

HTTP/1.1 200 OK
Content-Type: application/json
Server: Docker/1.9.1 (linux)
Date: Sat, 26 Nov 2016 14:33:45 GMT
Content-Length: 1162

{"ID":"WBMI:TD6B:PRUN:XWSX:5RVV:QUYO:5S27:W74L:MQ3W:YDB7:JXPL:NR5X","Containers":12,"Images":11,"Driver":"aufs","DriverStatus":[["Root Dir","/var/lib/docker/aufs"],["Backing Filesystem","extfs"],["Dirs","35"],["Dirperm1 Supported","true"]],"MemoryLimit":true,"SwapLimit":false,"CpuCfsPeriod":true,"CpuCfsQuota":true,"IPv4Forwarding":true,"BridgeNfIptables":true,"BridgeNfIp6tables":true,"Debug":false,"NFd":19,"OomKillDisable":true,"NGoroutines":33,"SystemTime":"2016-11-26T22:33:45.641108177+08:00","ExecutionDriver":"native-0.2","LoggingDriver":"json-file","NEventsListener":0,"KernelVersion":"4.4.0-47-generic","OperatingSystem":"Ubuntu 16.04.1 LTS (containerized)","IndexServerAddress":"https://index.docker.io/v1/","RegistryConfig":{"InsecureRegistryCIDRs":["127.0.0.0/8"],"IndexConfigs":{"docker.io":{"Name":"docker.io","Mirrors":null,"Secure":true,"Official":true}},"Mirrors":null},"InitSha1":"","InitPath":"/usr/bin/docker","NCPU":4,"MemTotal":4125528064,"DockerRootDir":"/var/lib/docker","HttpProxy":"","HttpsProxy":"","NoProxy":"","Name":"ubuntu","Labels":null,"ExperimentalBuild":false,"ServerVersion":"1.9.1","ClusterStore":"","ClusterAdvertise":""}