driftregion

import time
from threading import Event

from example_interfaces.srv import AddTwoInts

import rclpy
from rclpy.node import Node
from rclpy.callback_groups import ReentrantCallbackGroup
from rclpy.executors import MultiThreadedExecutor, SingleThreadedExecutor

stefanbuck

#!/usr/bin/env bash
#
# Author: Stefan Buck
# License: MIT
# https://gist.github.com/stefanbuck/ce788fee19ab6eb0b4447a85fc99f447
#
#
# This script accepts the following parameters:
#
# * owner

neilgee

/* 
 * Set up your Git configuration 
 */

git config --global user.email "you@yourdomain.com"

git config --global user.name "Your Name"

git config --global core.editor "nano"

bmaupin

# Cache sudo password
sudo -v

# Enable installation of 32-bit packages
sudo dpkg --add-architecture i386

# Enable the Ubuntu partner repository (this doesn't seem to be necessary for 20.04)
if [ $(lsb_release -r | awk '{print $2}') == '18.04' ]; then
    sudo sed -i 's/^# deb http:\/\/archive.canonical.com\/ubuntu/deb http:\/\/archive.canonical.com\/ubuntu/' /etc/apt/sources.list
    sudo apt update

guifromrio

This can reduce files to ~15% of their size (2.3M to 345K, in one case) with no obvious degradation of quality.

ghostscript -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/printer -dNOPAUSE -dQUIET -dBATCH -sOutputFile=output.pdf input.pdf

Other options for PDFSETTINGS:

• /screen selects low-resolution output similar to the Acrobat Distiller "Screen Optimized" setting.
• /ebook selects medium-resolution output similar to the Acrobat Distiller "eBook" setting.
• /printer selects output similar to the Acrobat Distiller "Print Optimized" setting.
• /prepress selects output similar to Acrobat Distiller "Prepress Optimized" setting.

dragermrb

import http.server
import cgi
import base64
import json
from urllib.parse import urlparse, parse_qs


class CustomServerHandler(http.server.BaseHTTPRequestHandler):

    def do_HEAD(self):

mortcanty

andreyryabtsev

davidlares

#!/usr/bin/python

import socket
import struct

# creating a rawSocket for communications
# PF_SOCKET (packet interface), SOCK_RAW (Raw socket) - htons (protocol) 0x08000 = IP Protocol
rawSocket = socket.socket(socket.PF_PACKET, socket.SOCK_RAW, socket.htons(0x0800))

# deciding interface - packet sniffing and then injection

CarlosGS

# Fast reading from the raspberry camera with Python, Numpy, and OpenCV
# Allows to process grayscale video up to 124 FPS (tested in Raspberry Zero Wifi with V2.1 camera)
#
# Made by @CarlosGS in May 2017
# Club de Robotica - Universidad Autonoma de Madrid
# http://crm.ii.uam.es/
# License: Public Domain, attribution appreciated

import cv2
import numpy as np