Bashscripts.org

Dear all,

I have a file in this format (like a matrix)
- A B C .. X
A 1 4 2 .. 2
B 2 6 4 .. 8
C 3 5 5 .. 4
. . . ... .
X . . ... .

and want to convert it into a file with this format:
A A = 1
A B = 4
A C = 2
...
A X = 2
B A = 2
B B = 6
etc

1) numbers and letters are separated with a tab
2) dots in the example represent numbers or letters

Is there an easy way in bash to make this conversion?

Thanks

I would try the following. It splits the first/header line into an 'header' array. For all other lines it splits the line into an 'arr' array and loops through all entries, printing the first column of the line, the appropriate header column and the column value.

Pure bash: