To add Erlang repository that also includes the public key for verifying signed package, use the following shell commands: wget https://packages.erlang-solutions.com/erlang-solutions-1.0-1.noarch.rpm rpm -Uvh erlang-solutions-1.0-1.noarch.rpmInstall Erland yum install erlangCheck that Erland has been installed enter the command (case sensitive) erlIf the Erland package has been successfully installed terminal will be output something like Erlang/OTP 21 [erts-10.3.2] [source] [64-bit]...