noob - set up a wallet with centos 7 Hi so I used the following bash script to set up bitcoin on my centos server https://gist.github.com/cdodd/f485b72aed8c2a6440a6141cd1ba8273?signup=true 

however i don't know how to get a wallet or create a wallet and everytime i try I get the following error, their is no config file and I am not sure where one is meant to be located. could someone please help point me in the right direction to install bitcoin correctly and create my own wallet.

Thanks

./bitcoin-cli -testnet getwalletinfo                                                        
error: Could not locate RPC credentials. No authentication cookie could be found, and RPC password is not se
t.  See -rpcpassword and -stdinrpcpass.  Configuration file: (/root/.bitcoin/bitcoin.conf)
I don't have CentOS, but running on SuSE Linux, which is quite similiar. 

At first, let me say, it is not recommended to run bitcoin daemon with root privileges. You may want to create a user to run bitcoin. 

After install with the script, you should have three files (well, symbolic links) in /usr/bin, one is bitcoin-cli, the other we need bitcoind. With the new user you would open a terminal window, and see if you can start the daemon (bitcoind). It would normally create a bitcoin.conf file in the directory ".bitcoin" in the users home directory. In this file you can set the rpcuser and rpcpassword, that you will then use with bitcoin-cli. 

If daemon does not start, is there any logfile from the system or in the ~/.bitcoin directory of the user?