Maxopoly

#You probably want to do this in root to reduce the amount of sudos required
su -

#Install iptables if you haven't already
#Alternatively use packet manager of your choice
apt-get install iptables

#Allow all incoming traffic to begin with
iptables -P INPUT ACCEPT
#Clean out any existing input rules. You may also remove the "INPUT" argument and run only "iptables -F" to clear all chains. When doing so, make sure there are no rules in other chains that you still need (list via "iptables -L"), for example Oracle cloud servers will have preset rules, which should not be removed.

alexandru

Tree Style Tab

Firefox Add-on: https://addons.mozilla.org/en-US/firefox/addon/tree-style-tab/

For getting rid of the horizontal tab bar to save vertical space and reduce confusion, edit userChrome.css to add this:

/* Hide tab bar in FF Quantum */
@-moz-document url("chrome://browser/content/browser.xul") {

devarajchidambaram

Difference between spawn and exec functions of child_process

The Node.js Child Processes module (child_process) has two functions spawn and exec, using which we can start a child process to execute other programs on the system. Those new to child_process may wonder why there are two functions to do the same thing, and which one they should use. I'll explain the differences between spawn and exec to help you decide when to use what.

The most significant difference between child_process.spawn and child_process.exec is in what they return - spawn returns a stream and exec returns a buffer.

child_process.spawn returns an object with stdout and stderr streams. You can tap on the stdout stream to read data that the child process sends back to Node. stdout being a stream has the "data", "end", and other events that streams have. spawn is best used to when you want the child process to return a large amount of data to Node - image processing, reading binary data etc.

child_process.spawn is "asynchronously asynchr

theramiyer

Install Arch Linux (ARM) on Raspberry Pi B+

Created 17 Aug 2018

This is a simple installation that I did on my Raspberry Pi. Of course, this is only one of the many reasons to do it.

Here are my requirements:

sloanlance

jq: JSONL ↔︎ JSON conversion

Prerequisites

• jq — https://jqlang.github.io/jq/ — "like sed for JSON data"

  There are several options available for installing jq. I prefer to use Homebrew: brew install jq

1. JSONL → JSON

ladinu

Requirements

1. Encrypt everthing including /boot and /root
2. Enter password once
3. Support UEFI

Installation media setup

Download NixOS minimal iso and copy to USB stick. For example on Mac OSX

$ diskutil list
$ diskutil unmountDisk /dev/disk1 # Make sure you got right device

matti

apk add --no-cache -X http://dl-cdn.alpinelinux.org/alpine/edge/testing \
  x11vnc

wojteklu

Code is clean if it can be understood easily – by everyone on the team. Clean code can be read and enhanced by a developer other than its original author. With understandability comes readability, changeability, extensibility and maintainability.

---

General rules

1. Follow standard conventions.
2. Keep it simple stupid. Simpler is always better. Reduce complexity as much as possible.
3. Boy scout rule. Leave the campground cleaner than you found it.
4. Always find root cause. Always look for the root cause of a problem.

Design rules

QinMing

# Copyright (c) 2016-2018 Ming Qin (覃明) <https://github.com/QinMing>
# Open source under MIT LICENSE.

lazy_load() {
    # Act as a stub to another shell function/command. When first run, it will load the actual function/command then execute it.
    # E.g. This made my zsh load 0.8 seconds faster by loading `nvm` when "nvm", "npm" or "node" is used for the first time
    # $1: space separated list of alias to release after the first load
    # $2: file to source
    # $3: name of the command to run after it's loaded
    # $4+: argv to be passed to $3

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