olih

Processing JSON using jq

jq is useful to slice, filter, map and transform structured json data.

Installing jq

On Mac OS

brew install jq

vladwa

import logging
import paramiko

class SSH:
    def __init__(self):
        pass

    def get_ssh_connection(self, ssh_machine, ssh_username, ssh_password):
      """Establishes a ssh connection to execute command.
        :param ssh_machine: IP of the machine to which SSH connection to be established.

m-radzikowski

#!/usr/bin/env bash

set -Eeuo pipefail
trap cleanup SIGINT SIGTERM ERR EXIT

script_dir=$(cd "$(dirname "${BASH_SOURCE[0]}")" &>/dev/null && pwd -P)

usage() {
  cat <<EOF
Usage: $(basename "${BASH_SOURCE[0]}") [-h] [-v] [-f] -p param_value arg1 [arg2...]

liviaerxin

Gstreamer Pipeline Samples

Table of Contents:

• Gstreamer Pipeline Samples
  • Tips for Debug
  • Video
    • display test video
    • record to file
• record and display at the same time(queue)

JADC362

Debug ROS2 C++ node on VSCode (Ubuntu)

Description

This is a small tutorial on how to debug a ROS2 C++ node usign VSCode.

Requeriments

This implementation was done using:

simonw

git archive --format=tar.gz -o /tmp/my-repo.tar.gz --prefix=my-repo/ master

More detailed version: https://til.simonwillison.net/git/git-archive

scottjacobsen

SSH agent forwarding is great. It allows you to ssh from one server to
another all the while using the ssh-agent running on your local
workstation. The benefit is you don't need to generate ssh key pairs
on the servers you are connecting to in order to hop around.

When you ssh to a remote machine the remote machine talks to your
local ssh-agent through the socket referenced by the SSH_AUTH_SOCK
environment variable.

So you the remote server you can do something like: 

isaacs

# Hello, and welcome to makefile basics.
#
# You will learn why `make` is so great, and why, despite its "weird" syntax,
# it is actually a highly expressive, efficient, and powerful way to build
# programs.
#
# Once you're done here, go to
# http://www.gnu.org/software/make/manual/make.html
# to learn SOOOO much more.

awesomebytes

How to make a debian from a ROS package

The instructions are based on this answers.ros.org thread.

Get dependencies

You may need the latest pip, follow the official instructions.

Install bloom:

giraldeau

cmake_minimum_required(VERSION 3.8)
project(tsProject)

# Managing translations require LinguistTools module
# The cmake function is defined in the Qt installation tree:
# i.e. Qt5.9.1/5.9.1/gcc_64/lib/cmake/Qt5LinguistTools/Qt5LinguistToolsMacros.cmake
# Reference: https://doc.qt.io/qt-5/cmake-manual.html#qt5linguisttools-macros
find_package(Qt5 COMPONENTS Widgets LinguistTools)
set (CMAKE_CXX_STANDARD 11)
set(CMAKE_INCLUDE_CURRENT_DIR ON)