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Glossary Definitions

Glossary of terms.
sudo #
Most linux distributions allow users to run commands and programs as a different user using sudo. Often a window will pop up asking the user for their password to allow a user to run administrative programs as the root user. In order to do this the user must have the necessary permission, which is known as being asudoer.
Xrun #
An Xrun is a buffer underrun , this happens when the the data cannot be supplied fast enough to a device , in this case it is when there is not enough processing resources to output the data fast enough which causes the soundcard to jack to pass an empty frame of data. This is usually caught by the software and no noise comes out but it can sometimes escape and cause clicks , pops or scratchy noises. Jack keeps a count of xruns , one or two isn't too bad but more than 5 in a minute means you need to reconfigure a bit or upgrade. When Xruns occur you are at the limit of the machines capacity.