Get all nem namespace from Node

get_all_nem_namespace.sh

#!/bin/bash
nodeUrl=http://88.99.192.82:7890 # huge alice
# nodeUrl=http://176.9.68.110:7890 # huge alice 2
# nodeUrl=http://176.9.20.180:7890 # huge alice 3
tempDir=/tmp/_get_all_nem_namespace
lastId=99999
[ -d $tempDir ] || mkdir -p $tempDir
while [ "$lastId" != "null" ]; do
  result=$(curl -s "$nodeUrl/namespace/root/page?pageSize=100&id=$lastId")
  firstId=$(echo $result | jq .data[0].meta.id)
  lastId=$(echo $result | jq .data[-1].meta.id)
  [ "$lastId" = "null" ] && break
  echo $result | jq '.data[].namespace' > "$tempDir/$firstId.json"
  sleep 1
done
jq --slurp '.' $tempDir/*.json > namespaces.json