Create monaca_config.json if it does not exist.

[masahirotanaka]

When clean installing monaca-cli and configure a proxy server, it will return an error like the one below.

# monaca proxy set http://localhost:1080      
Unable to set proxy server: Error: ENOENT, open '/root/.cordova/monaca_config.json'

Can you please create the configuration file if it is not found?

[argelius]

Thanks. I will create the file.

[argelius]

This is fixed now.