4 | Line Num: 4 | I am Main.sh ($LINENO)
5 | Line Num: 0 | I am Main.sh ($BASH_LINENO)
6 | Line Num: 3 | I am sample1.sh ($LINENO)
7 | Line Num: 7 | I am sample2.sh ($BASH_LINENO)
8 | Line Num: 3 | I am function1 @ sample3.sh ($LINENO)
9 | Line Num: 9 | I am function2 @ sample4.sh ($BASH_LINENO)

Array values in $BASH_LINENO:
12 0