karlding

"""A partial re-implementation of testj1939 from can-utils in Python to test
https://github.com/python/cpython/pull/19538
"""
import socket


def main():
    with socket.socket(
        family=socket.PF_CAN, type=socket.SOCK_DGRAM, proto=socket.CAN_J1939
    ) as s:

karlding

#!/bin/bash

ACTIVE_PRS=(290 539 554 567)
DIFF_FILE="output.txt"

echo "" >| "${DIFF_FILE}"

for PR in "${ACTIVE_PRS[@]}"; do
  git fetch origin pull/"${PR}"/head:pr-"${PR}"
  git diff --name-only develop...pr-"${PR}" | tee -a "${DIFF_FILE}"

karlding

How to make Cygwin use native symlinks

I stumbled upon this cool Cygwin option that allows you to use native Windows (NTFS) symlinks (like CreateSymbolicLinkW in the Win32 API, or mklink via cmd shell). Apparently there's a CYGWIN environment variable that "is used to configure many global settings for the Cygwin runtime system".

One of those options is winsymlinks:{lnk,native,nativestrict}.

if set to just winsymlinks or winsymlinks:lnk, Cygwin creates symlinks as Windows shortcuts with a special header and the R/O

karlding

Keybase proof

I hereby claim:

• I am karlding on github.
• I am karlding (https://keybase.io/karlding) on keybase.
• I have a public key ASDjk5bahFgKFcF7XNRR3loS6sakwJv0X0WE1ljuJSzefQo

To claim this, I am signing this object:

karlding

Trackpad Two Finger Scrolling Workaround After Suspend

After suspending, two finger scrolling stops working.

 → TITANIC@~ $ lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 17.10
Release:	17.10

karlding

#!/bin/bash

# Backup all my music from my Windows Music folder 
# (/media/karl/5A14316614314673/Users/Karl/Music) to my 2 TB external drive 
# (/media/karl/A0D83FDAD83FAE02/bak/Users/Karl/Music) using rsync

WINDOWS_MEDIA_DIR="/media/karl/5A14316614314673/Users/Karl/Music"
EXTERNAL_DRIVE="/media/karl/A0D83FDAD83FAE02/bak/Users/Karl"

rsync -va "${WINDOWS_MEDIA_DIR}" "${EXTERNAL_DRIVE}"

karlding

Download Vagrant boxes manually

In this example, we're going to download the Midnight Sun box.

# The box URL is https://app.vagrantup.com/uwmidsun/boxes/box/versions/2.1.0
# In general, we just take the box URL, and then append the provider URL
# https://app.vagrantup.com/<organization name>/boxes/<box name>/versions/<version>/providers/<provider>.box
wget https://app.vagrantup.com/uwmidsun/boxes/box/versions/2.1.0/providers/virtualbox.box -O box-2.1.0.box

karlding

#!/bin/bash

# Script for installing tmux on systems where you don't have root access.
# tmux will be installed in $HOME/local/bin.
# It's assumed that wget and a C/C++ compiler are installed.

# exit on error
set -e

TMUX_VERSION=2.5

karlding

pyenv + virtualenvwrapper cheat sheet

Requirements

• pyenv
• pyenv-virtualenvwrapper

Usage

Install new Python versions

karlding

On my Nexus 5, I started shooting in RAW mode with JPG previews. However, when I copy the DNGs over to my laptop for editing/archival, I don't care about the JPG files.

The camera app creates two files:

1. filename.jpg: the JPG preview
2. filename.dng: the RAW file

Basically, we want to remove any JPG files for which a RAW file also exists. I