始料未及的COVID-19、延期的考试、又可以瞎倒腾的喜悦

Hmmm，真的本来下定决心不要东摸西摸专心功课，但是确实发生了本次人类历史上的大事件（当然可能在以后的日子里这个也就是洒洒水水平）导致了考试的延期，我又再一次的东张西望起来。

hmmm，好吧为了庆祝又可以自由活动，特此献上抄来的小程序一篇。以下可以用在ledge nano x上面查阅ETH。ledger的椭圆曲线弧度做了修改，更加细化了。

# List accounts from the Ledger Nano X
# Works in OS/X and Linux. May work in Windows with Cygwin.
#
# How to use:
# 1. Save into a file, e.g., ~/bin/getNanoAccounts
# 2. Set the executable bit - `chmod 700 ~/bin/getNanoAccounts`
# 3. Run the script - `~/bin/getNanoAccounts`
#
# (c) BokkyPooBah - Aug 13 2017. The MIT Licence.
# ------------------------------------------------------------------------------

geth attach << EOF | grep "RESULT: " | sed "s/RESULT: //"

function padLeft(s, n) {
  var result = s.toString();
  while (result.length < n) {
    result = " " + result;
  }
  return result;
}

function listNanoAccounts(from, to) {
  if (from == null) {
    from = 0;
  }
  if (to == null) {
    to = 9;
  }
  var nanoUrl=personal.listWallets[personal.listWallets.length-1].url;
  var nanoPathPrefix="m/44'/60'/0'/0/";
  var total = new BigNumber(0);
  console.log("RESULT:   # Account                                                        Ethers");
  console.log("RESULT: --- ------------------------------------------ --------------------------");
  for (var i = from; i <= to; i++) {
    var account = personal.deriveAccount(nanoUrl, nanoPathPrefix + i, true).address;
    var balance = eth.getBalance(account);
    total = total.add(balance);
    console.log("RESULT: " + padLeft(i, 3) + " " + account + " " + padLeft(balance.toFixed(18), 26));
  }
  console.log("RESULT: --- ------------------------------------------ --------------------------");
  console.log("RESULT:     Total                                      " + padLeft(total, 26));
  console.log("RESULT: --- ------------------------------------------ --------------------------");
}

listNanoAccounts()

EOF