1. Copy the XGrail resource file to your home directory. First change to your home directory.
cd (return)
Then copy the file,
cp /usr/local/XGRAIL/XGrail .
(don't forget the dot at the end)
2. Set the environmental variable XGRAILHOME. This may already be set, type the command env and see if it is listed. If it is not set, use the following command,
setenv XGRAILHOME /usr/local/XGRAIL (return)
After completing those steps, you should be able to type the command xgrail and see the XGrail window appear on your screen.
Note: In order to load a DNA sequence file, it must be in fast a format, and the name of the file must end in ".seq".
The user's guide is a good place to start learning about XGrail features.