#!/bin/bash
export LC_ALL=C
awk '{ sum += $1;  L[n++] = $1 } 
 END {
 for (j=1;j<3;j++){
 for (i=1; i<n-1; i++) {
 FL[i]=(L[i+1]+L[i-1]+2*L[i])/4}; FL[0]=(L[0]+L[1])/2; FL[n-1]=(L[n-2]+L[n-1])/2 
 for (i=0; i<n; i++) {
 L[i]=FL[i] }
 }
 for (i=0; i<n; i++) {
 print L[i]}
 }
 ' $1
