Using bash to read elements on a diagonal on a matrix and redirecting it to another file

Question

So, currently i have created a code to do this as shown below. This code works and does what it is supposed to do after I echo the variables:

a=`awk \'NR==2 {pri         


        

Answer 1

awk 'BEGIN {f=1} {print $f; f=f+1}' infile > outfile