Debugging on UNIX

Perform these steps to debug with xterm:

Run your machine in X11 mode. Log into the X11 desktop and set the TYPEPARAM to be set to the DISPLAY parameter for the desktop, which is usually :0.0.
Authorize the user ID that the service engine is running on, which will enable you to start a process that connects an X server. In a terminal window on the X session issue this command:
```
xauth list $DISPLAY 
```
You should get output like this:
```
xauth add tex-mikes-centos54/unix:0
MIT-MAGIC-COOKIE-1 
5a823d65948333914f4bcc795cd283de 
```
Using a terminal emulator, log in to the account that the service engine will be running under. This will probably be root, not the UserName in /etc/xbis.conf. Then enter the command:
```
xauth add tex-mikes-centos54/unix:0 MIT-
MAGIC-COOKIE-1 
5a823d65948333914f4bcc795cd283de
```
Copy the underlined parts from the xauth list to the xauth add.