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

tadwohlrapp

How to Export your Google Podcasts listening history

Since Google doesn't provide any method to export or download your listening history, I wanted to find a way to preserve that data for later reference when setting up a new podcast app. I came up with the following script that can be run in your browser console to retrieve and export your Google Podcasts listening history as a CSV file.

NEVER RUN CODE YOU DON'T UNDERSTAND.

Running untrusted code in your browser console can potentially be harmful, so it's important to understand what the code does before executing it. I've included comments in the code to explain its functionality.

Instructions:

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

rsync

I was using rsync -e "ssh" to transfer files between local and remote computer. If I want to transfer a file from remote to local, the command will be like rsync -av --delete -e "ssh" user@ip:/path/to/fileA /home/user/folder/. One day, however, I thought I could transfer a remote folder /path/to/folderA/ to my home /home/user/. After running the command, I found that it started erasing my home directory! Since Linux has disk encryption by default, I failed to rescue those files eventually ;(

bash_history

My bash history was stored as ~/.bash_history. One day, I was running a huge apt upgrade. It took me plenty of time, so I left it and went to sleep. However, I forgot that my laptop was in battery mode. So eventually, the battery ran out, and my computer experienced an abnormal power off, which resulted in me having a corrupted bash_history. I have no backups, so I lost all my bash history ;(

tee

I just learned how to use tee to app

davidhcefx

以下是我自己的逆向工程筆記！有錯還請多多指教XD

    ┌───────── ASCII ─────────┐
    │  30   0    20    SPACE  │
    │  41   A    0d0a  CRLF   │
    │  61   a                 │
    └─────────────────────────┘

davidhcefx

My Tmux Config

Features

• More intuitive. (eg. + to create windows, | to split horizontally, Ctrl+C to copy, End to move to end-of-line)
• System clipboard integration. (support: MacOS, X-Window, Cygwin)
• Words highlighted by your mouse will stay on the screen; good for explaining stuff to others.

Installation

1. Install tmux, for example, via apt-get install tmux.
2. Under home directory, create a file ~/.tmux.conf with the following contents.