Hi, Can someone please breakdown this piece of code and explain everything happening here.

How could I apply the same logic using awk, to eliminate columns that do not have more than 1 unique value?

Language is Bash and Shell script

7 8 9 10 awk -F, '{ a [NR] =$0 }NR>1{ for (i=1;i0) LINE=LINE","c[j] ; print substr(LINE, 2, length(LINE) 1) } }' 11 12 13 14 15 16 17 7 8 9 10 awk -F, '{ a [NR] =$0 }NR>1{ for (i=1;i0) LINE=LINE","c[j] ; print substr(LINE, 2, length(LINE) 1) } }' 11 12 13 14 15 16 17