What is a RPC Username & Password?

[jbgc]

Hey,

I am trying to configure my Mac to use GPU to mine instead of CPU but some of the code requires an RPC username and RPC password.  As far as I know, I have not created a username and password.

How can I get my RPC Username/Password and what exactly is it?

Thanks,
jbgc

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[ChanneledDan]

In your bitcoin.conf file you need to set a username and password (and set server=1 so the client starts up as a server not just a client).

on a Mac the bitcoin.conf is in your HardDrive/Users/(username)/Application Support/Bitcoin

If it's not there you'll need to create one. A sample can be found here: https://en.bitcoin.it/wiki/Running_Bitcoin
Just set your own username and password and set server=1

[jbgc]

In your bitcoin.conf file you need to set a username and password (and set server=1 so the client starts up as a server not just a client).

I tried to open up the bitcoin.conf file but it did not recognize the file format, so I opened it up with 'TextEdit', a simple text editor similar to 'notepad' on a Windows OS.  It had two lines of text:

     rpcuser=username
     rpcpassword=password

So I simply change the username/password, then add a third line that says 'server=1'?  Is this a good example of what it should look like? --->

     rpcuser=jbgc
     rpcpassword=Bitmaster21
     server=1

Can the password be case-sensative?  Thanks for the help thus far.   

[ChanneledDan]

Yeah, I should have mentioned that it's just a text file and can be edited with TextEdit.

I assume, since bitcoin was designed according to security best practices, that passwords are case sensitive as they should be. That should be it. When you run a GPU miner (providing localhost as the host and your username and password you set) it should tell you whether it connects successfully or not.