Shell Programming and Scripting

#!/bin/bash                                                                                                                                                           

cat <<EOF > data.txt                                                                                                                                                  
(here goes the file name but dont know how to pass the filename argument through the file )                                                                           
auto                                                                                                                                                                  
n                                                                                                                                                                     
/home/multalign/dna.tab                                                                                                                                        
                                                                                                                                                                      
n                                                                                                                                                                     
msf                                                                                                                                                                   
y                                                                                                                                                                     
aligned                                                                                                                                                               
                                                                                                                                                                      
100.90                                                                                                                                                                
EOF                                                                                                                                                                   

for x in {A..H}
do
    echo $x
    for y in PreS1 PreS2 S X
    do
        /home/multalign/tab/ma < data.txt
        echo Done: ${x}_${y}.fas
    done
done