Proxy Configuration
If you have proxy in your environment, it will be necessary to add this configuration in your terminal. In order to do that, you can proceed as below:
To check the current configuration
$ echo $http_proxy
To setup your proxy
$ export http_proxy=http://SERVER:PORT/
or
$ export http_proxy=http://USERNAME:PASSWORD@SERVER:PORT/
And if you would like to keep it permanent
# echo "export http_proxy=http://proxy.local.domain:3128/" > /etc/profile.d/http_proxy.sh
Note. Please, change the values according to your environment. After that, you should be good to go and use the crhc with no problems.