#! /bin/bash set -u function toHex() { echo -n $1 | hexdump -ve '1/1 "%.2X"' } N=$1 PORT=$2 for i in `seq 1 $N`; do # store key value pair KEY=$(head -c 10 /dev/urandom) VALUE="$i" echo $(toHex $KEY=$VALUE) curl 127.0.0.1:$PORT/broadcast_tx_sync?tx=0x$(toHex $KEY=$VALUE) done