tezos-reward-gaps.sh: show time between baking/endorsing to help schedule node maintenance

tezos-reward-gaps.sh

#!/bin/bash

# This script will only show time gaps between future endorsing slots.

# You need to install JQ: https://stedolan.github.io/jq/

# Enter your path to tezos-client here, without a trailing slash
tc="/home/tezos/tezos/tezos-client"
delegate="tz1______________"
timezone="America/New_York"

# This gives you cleaner output. Comment it out then log off/log in to see the warning.
export TEZOS_CLIENT_UNSAFE_DISABLE_DISCLAIMER=Y

cycle=$1
nodestatus=$(ps -fU tezos | grep "[t]ezos-node run")
echo "$nodestatus" | grep -qi "tezos-node run"

if [ $? -eq 0 ];then
	endorsing_times=$($tc rpc get "/chains/main/blocks/head/helpers/endorsing_rights?delegate=$delegate&cycle=$1" | jq -r '.[].estimated_time' | sed '/null/d' | sed '/^\s*$/d')
	arr=($endorsing_times)
	arraylength=${#arr[@]}

	# Calculates the difference between each event
	for ((index=1; index < ${arraylength}; index++))
		do
			current=$(dateutils.dconv ${arr[index]} --from-zone UTC --zone "$timezone")
			previous=$(dateutils.dconv ${arr[index-1]} --from-zone UTC --zone "$timezone")
			diff=$(dateutils.ddiff $previous $current -f '%Hh %Mm %Ss')
			echo $diff" between $previous & $current"
		done

elif [[ -n "$flag" ]];then
	echo "Node Stopped"
fi