How to install angularcli in my system?

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angular-cli

Hi,

I am trying to install angularcli in my system.But when I tried to use the below command line

npm install -g @angular/cli

in node.js command prompt I am facing the below issue.

" There is a problem related to network security.In most cases you are behind a proxy or have bad network settings.If you are behind a proxy please make sure that 'proxy' config is set properly. "

I have already installed node.js(8.2.1) and npm(5.3.0) in my system.Also I am using windows 10.Please help me to install angular cli

What I have tried:

But when I tried to use the below command line

npm install -g @angular/cli

in node.js command prompt I am facing the below issue.

" There is a problem related to network security.In most cases you are behind a proxy or have bad network settings.If you are behind a proxy please make sure that 'proxy' config is set properly. "