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How to setup Rakuten (LTE) SIM for Surface Go LTE

Motivation

This week, I made a contruct for a nano SIM card of Rakuten Mobile UN-LIMIT.

• https://network.mobile.rakuten.co.jp/fee/un-limit/

I tried installing the SIM to my Surface Go LTE, but unfortunatelly the easy first attempt failed.

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Windows 10 Cheat Sheet

Device Manager

Right-click on Start, and Select Device Manager

Common Problems

• A Bluetooth mouse or keyboard fails to reconnect after being left idle

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CloudReady Cheat Sheet

Tips & Tricks

• https://neverware.zendesk.com/hc/en-us/sections/201495957-Tips-Tricks
  • https://neverware.zendesk.com/hc/en-us/articles/360001343908-Disabling-RootFS-Verification

Common Problems

Fix "bad trackpad package"

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Mail Cheat Sheet

RFC

• RFC2821 Simple Maile Transfer Protocol

Sending an E-mail Message via. Command Line Tools

$ nc  25

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public class IOUtils {
    public static String toString(InputStream input, String charset) throws IOException {
        ByteArrayOutputStream output = new ByteArrayOutputStream();
        byte[] buffer = new byte[1024];
        int n = 0;
        while ((n = input.read(buffer)) != -1) {
            output.write(buffer, 0, n);
        }
        return output.toString(charset);
    }

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#!/bin/sh

set -e

go get -u -v github.com/mdempsky/gocode
go get -u -v github.com/uudashr/gopkgs/cmd/gopkgs
go get -u -v github.com/ramya-rao-a/go-outline
go get -u -v github.com/acroca/go-symbols
go get -u -v golang.org/x/tools/cmd/guru
go get -u -v golang.org/x/tools/cmd/gorename

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Ubuntu Cheat Sheet

iptables

$ sudo iptables -S
...
$ sudo iptables -P FORWARD ACCEPT

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Diagnostic Tools in Java

jcmd

# The following error occurs when the pid owned by the diffrent user.
$ jcmd <pid> help
<pid>:
com.sun.tools.attach.AttachNotSupportedException: Unable to open socket file: target process not responding or HotSpot VM not loaded
        at sun.tools.attach.LinuxVirtualMachine.<init>(LinuxVirtualMachine.java:106)

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trait Semigroup[A] {
  def combine(a: A, b: A): A
}

trait Monoid[A] extends Semigroup[A] {
  def empty: A
}

object Monoid {
  def apply[A : Monoid]: Monoid[A] = implicitly[Monoid[A]]

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Using JIS Keyboard as US Keyboard on XKB

The command setxkbmap allows us to modify any key mapppings in user X session. However each time the input method is changed, the modified states will be reset. Since I have no clue to solve this problem, I decided to rewrite the global symbol file at my own risk.

$ cp /usr/share/X11/xkb/symbols/jp /path/to/backup/jp.default
$ patch -u /usr/share/X11/xkb/symbols/jp < js-ansi.patch

Before editing xkb resources, I highly recommend that you save the current keymap. Just save the original keymap and restore it.