UNIX for Dummies Questions & Answers

x1 y1 z1
x2 y2 z2
...(and so on)

a11 a12 a13
a21 a22 a23
a31 a32 a33

x1' y1' z1'
x2' y2' z2'
...(and so on)

awk 'BEGIN {             #At this point my intention is to save the
   getline x < f        #different values of file2 into an array of 9
   split (x,F)          #places, but this is what i can't do.
   (and don't know how to go on)
   }
   {c1=$1*F[1]+$2*F[2]+$3*F[3]
   c2=$1*F[4]+$2*F[5]+$3*F[6]
   c3=$1*F[7]+$2*F[8]+$3*F[9]
   printf "someformat",c1,c2,c3
   }' f=file2 file1

 awk 'NR==FNR {
        for(i=1;i<=NF;i++)A[NR,i]=$i
        next
      }
      {
        for(i=1;i<=NF;i++){
          t=0
          for(j=1;j<=NF;j++)
            t+=A[i,j]*$j
          printf t FS
        }
        print ""
      }' file2 file1