Hi,

I have installed CLI as per the guidelines. Then i entered 'sfdx' command in comand prompt as well as in  GitBash but it's not giving the proper response as showing in 'Set Up Salesforce DX' Module. And i am getting the response as below, Could you please help me 
​ 

$ sfdx
panic: Get https://developer.salesforce.com/media/salesforce-cli/sfdx-cli/channels/stable/windows-x64: dial tcp: lookup developer.salesforce.com: getaddrinfow: This is usually a temporary error during hostname resolution and means that the local server did not receive a response from an authoritative server.

goroutine 1 [running]:
panic(0x6632a0, 0xc042008780)
        /usr/local/go/src/runtime/panic.go:500 +0x1af
main.must(0x7b92c0, 0xc042008780)
        /home/ubuntu/.go_workspace/src/github.com/heroku/cli/io.go:115 +0x63
main.GetUpdateManifest(0x6a4875, 0x7, 0x6a3c0d, 0x3, 0x7b92c0)
        /home/ubuntu/.go_workspace/src/github.com/heroku/cli/install.go:104 +0x272
main.GetUpdateManifest(0x6a4875, 0x7, 0x6a3c0d, 0x3, 0x0)
        /home/ubuntu/.go_workspace/src/github.com/heroku/cli/install.go:102 +0x2f4
main.Install()
        /home/ubuntu/.go_workspace/src/github.com/heroku/cli/install.go:33 +0x100
main.main()
        /home/ubuntu/.go_workspace/src/github.com/heroku/cli/main.go:18 +0x3a

Thanks & Regards
Narendra Nimmana