almoore

Getting realtime output using Python Subprocess

A convenience module for shelling out with realtime output

Credit: Largely taken from https://www.endpoint.com/blog/2015/01/28/getting-realtime-output-using-python

The Problem

wolph

import sys
import webbrowser


def main():
    return 42/0


def excepthook(type_, value, traceback):
    webbrowser.open_new_tab('https://stackoverflow.com/search?q=[python] {} {}'.format(type_, value))

alexellis

Additional notes

Original blog post - http://blog.alexellis.io/live-stream-with-docker/

How do I rebuild the image from scratch?

This will take several hours on a Raspberry Pi Zero - but less time on a Pi 2 or Pi 3. You can edit the Dockerfile for a Pi 2/3 and change RUN make to RUN make -j 4 to take advantage of the quad-core processor.

$ git clone https://github.com/alexellis/raspberrypi-youtube-streaming/

paulirish

Option 1: Command-line download extension as zip and extract

extension_id=jifpbeccnghkjeaalbbjmodiffmgedin   # change this ID
curl -L -o "$extension_id.zip" "https://clients2.google.com/service/update2/crx?response=redirect&os=mac&arch=x86-64&nacl_arch=x86-64&prod=chromecrx&prodchannel=stable&prodversion=44.0.2403.130&x=id%3D$extension_id%26uc" 
unzip -d "$extension_id-source" "$extension_id.zip"

Thx to crxviewer for the magic download URL.

sergeyhush

#!/bin/bash
WATCH_FILE="abc.123"
while read oldrev newrev refname; do
    if [ "$refname" = "refs/heads/master" ]; then
        if git diff-tree --name-only -r -z $oldrev $newrev | grep --quiet $WATCH_FILE ; then
            # WATCH_FILE changed...
        fi
    fi
done