Print all historical difficulty adjustments

difficulty_adjustments.sh

#!/bin/bash
CURRENTHEIGHT=$(bitcoin-cli getblockchaininfo | jq -r .blocks)
DIFFICULTY=1
for ((HEIGHT = 0 ; HEIGHT < CURRENTHEIGHT ; HEIGHT += 2016))
do
  NEW_DIFFICULTY=$(bitcoin-cli getblock $(bitcoin-cli getblockhash $HEIGHT) | jq -r .difficulty)
  ADJUSTMENT=$(bc <<< "scale=16 ; ((($NEW_DIFFICULTY * 100 / $DIFFICULTY)) - 100)" | awk '{printf("%.2f \n",$1)}')
  echo $((HEIGHT / 2016)) $HEIGHT $NEW_DIFFICULTY $ADJUSTMENT
  DIFFICULTY=$NEW_DIFFICULTY
done