I want to replace '.' with '_' inside with variables inside curly braces.
#Sample input var1=http://${var.nameA}/page/${v.x.page1}/aaa var1=http://${var.nameB}/page/${v.x.b.page2}/bbb
#Expected output var1=http://${var_nameA}/page/${v_x_page1}/aaa var1=http://${var_nameB}/page/${v_x_b_page2}/bbb