I try to install squid proxy on Raspbian, from Webmin but, after installed successfully, can't configure the module to start using it.
The command squid was not found on your system. Maybe it is not installed, or the module configuration is incorrect.
I can go to the module configuration page but it doesn't save the file. Save button throws no error but the file is not saved at /etc/squid3/squid.conf and there is not folder /etc/squid3