davidhcefx

How to Search Facebook Messenger by Date

Answered in this thread

Until now, Facebook Messenger still doesn't offer an option to filter messages within a specific date range. The only option left is to scroll manually through the entire message thread, either by pressing Page up or Ctrl + Home, which is very very time-consuming.

So, I wrote a script to automate all the tedious stuff!

1. In Chrome, press Cmd+Option+C (or Ctrl+Shift+C on Windows) and click on a "timestamp message" in Messenger.
2. A "timestamp message" is the timestamp that are sometimes inserted at the top of the messages.

davidhcefx

davidhcefx

Brainfuck REPL interpreter

• Simple Brainfuck REPL interpreter in Python
• Here are some sample programs:
  • https://en.wikipedia.org/wiki/Brainfuck#Examples

Example

$ ./brainfuck_repl.py

davidhcefx

My List of Recommended Sublime Packages

MoveTab

• This is a handy plugin that I use in almost every day. Image to rearrange the tabs using the keyboard instead of dragging them with the mouse. By the way, Chrome already support this and the shortcut is Ctrl + Shift + PageUp.

Move By Paragraph

• Ctrl + Down is a common shortcut to move cursor to the next paragraph, for example in Microsoft Word and in Google Doc. This plugin provides the shortcut that Sublime lacks out of the box.

Default

• This plugin provides all the missing commands in the command palette. For example, I'll like to just type in the Command Palette in order to change Tab Width to X, instead of leaving the keyboard and clicking this and that.

davidhcefx

Commands

Basic

• git init: build .git folder
• git status
• git add .: select all files
  • --patch: 可以只加部分行數

Commit

• git commit: will open CLI text editor

davidhcefx

Offline Random Password Generator

There are plenty of ONLINE websites that claimed to be generating your password OFFLINE. This sounds quite absurd to me, as there are no way to tell if they are collecting your data or not, unless you look into their Javascript code or something. At the end of the day, generating one's password using someone else's website just doesn't make sense. Therefore, this code is meant to be run locally and is easy to understand, which is essential to provide confidence that it is safe.

Usage

python3 random_password_generator.py

davidhcefx

Nano's Rainbow Color Testing

An overview of 256 color supported by nano config file.

Instruction

1. Download the following file rainbow.nanorc.
2. Run nano -f /path/to/this/file /path/to/this/file

Note that for nano with version < 6.0, only 16 colors would be highlighted.

davidhcefx

Prettydot - Human readable dot graph language for CFG

• Background
• Usage
• Compilation

Background

[Dot][] is a graph description language in extensions .dot or .gv, and can be read by programs such as Graphviz ([try it online][]). However, it's syntax is too complicated for the goal of generating a simple control-flow graph, and is not very well human readable. Therefore, I defined a new language, prettydot, for this purpose.

davidhcefx

Agila Monokai Extended Brown.tmTheme

I am a big fan of Monokai theme and colors. This color scheme is basically the same as Agila's Monokai Extended color scheme, except that all gray backgrounds have been replaced with a nice looking brown one! :) (plus issue #43 been fixed)

Screenshot

Note that I only demonstrated the Color Scheme, not the Theme. The theme I used was Spacegray Eighties.

davidhcefx

Make CTFd Display Custom Fields for In-class Projects

We are using CTFd for in-class projects. Here I share some modifications on CTFd for better in-class managements.

• About Custom Fields
• The Problem
• Starting from Imitation
• Implementing a New One
• References