1. ## Install azure-cli on Mac and CentOS
    3. ### In Mac
    4. 1. Install brew.
    5. 2. brew install nodejs
    6. 3. echo “registry = https://registry.npm.taobao.org” > ~/.npmrc
    7. 4. npm install azure-cli -g
    10. ### In CentOS
    11. 1. Install epel
    12. 2. yum install -y nodejs npm
    13. 3. echo “registry = https://registry.npm.taobao.org” > ~/.npmrc
    14. 4. npm install azure-cli -g