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@ExtremeGTX
ExtremeGTX / Ubuntu_AP.md
Last active Jul 23, 2021
Setup Ubuntu server as Access point
View Ubuntu_AP.md

Introduction

This tutorial for setting up Ubuntu Server (RPi 3B) as Wifi access point

Overview:

The main steps can be listed as following:

  1. Install required packages
  2. Setup hostapd
  3. Setup DNSmasq
  4. Configure AP IP Address
View reduxify.js
import {connect} from 'react-redux'
export const reduxify = (container) =>
connect(
container.mapStateToProps,
container.mapDispatchToProps,
)(container.render)
@cyrusboadway
cyrusboadway / google-domains-dynamic-dns-update.sh
Created Feb 20, 2016
Script to update a Google Domains DNS record
View google-domains-dynamic-dns-update.sh
#!/bin/bash
### Google Domains provides an API to update a DNS "Syntheitc record". This script
### updates a record with the script-runner's public IP, as resolved using a DNS
### lookup.
###
### Google Dynamic DNS: https://support.google.com/domains/answer/6147083
### Synthetic Records: https://support.google.com/domains/answer/6069273
USERNAME=""
@MichaelPote
MichaelPote / himawari.ps1
Created Feb 3, 2016
Windows Powershell Script to download the latest image from the Himawari-8 satelite, combine the tiles into a single image, convert to jpg and then set as the desktop background.
View himawari.ps1
#
# Himawari-8 Downloader
#
#
#
# This script will scrape the latest image from the Himawari-8 satellite, recombining the tiled image,
# converting it to a JPG which is saved in My Pictures\Himawari\ and then set as the desktop background.
#
# http://himawari8.nict.go.jp/himawari8-image.htm
#
@oscarmorrison
oscarmorrison / IFTTTDate.md
Last active May 12, 2021
Make IFTTT Date Format play nice with Google Spreadsheets
View IFTTTDate.md

##Date and Time

=TIMEVALUE(SUBSTITUTE("{{OccurredAt}}"," at ", " ")) + DATEVALUE(SUBSTITUTE("{{OccurredAt}}"," at ", " "))

##Date

=DATEVALUE(SUBSTITUTE("{{OccurredAt}}"," at ", " "))

##Time

@sivel
sivel / better-ssh-authorized-keys-management.md
Last active Jul 13, 2021
Better SSH Authorized Keys Management
View better-ssh-authorized-keys-management.md

Better SSH Authorized Keys Management

A seemingly common problem that people encounter is how to handle all of your users authorized_keys file.

People struggle over management, ensuring that users only have specific keys in the authorized_keys file or even a method for expiring keys. A centralized key management system could help provide all of this functionality with a little scripting.

One piece of functionality overlooked in OpenSSH is the AuthorizedKeysCommand configuration keyword. This configuration allows you to specify a command that will run during login to retrieve a users public key file from a remote source and perform validation just as if the authorized_keys file was local.

Here is an example directory structure for a set of users with SSH public keys that can be shared out via a web server:

@albrow
albrow / IpToDecimal.js
Last active Mar 3, 2021
A short javascript function to convert an IP address in dotted decimal notation to a regular decimal. This is useful for IP address geolocation lookups. Supports both IPv4 and IPv6 addresses. http://en.wikipedia.org/wiki/Ip_address
View IpToDecimal.js
// convert the ip address to a decimal
// assumes dotted decimal format for input
function convertIpToDecimal(ip) {
// a not-perfect regex for checking a valid ip address
// It checks for (1) 4 numbers between 0 and 3 digits each separated by dots (IPv4)
// or (2) 6 numbers between 0 and 3 digits each separated by dots (IPv6)
var ipAddressRegEx = /^(\d{0,3}\.){3}.(\d{0,3})$|^(\d{0,3}\.){5}.(\d{0,3})$/;
var valid = ipAddressRegEx.test(ip);
if (!valid) {
return false;
@jppommet
jppommet / int2ip.js
Last active Jun 17, 2021
javascript conversion from ip address to long integer and vice versa
View int2ip.js
function int2ip (ipInt) {
return ( (ipInt>>>24) +'.' + (ipInt>>16 & 255) +'.' + (ipInt>>8 & 255) +'.' + (ipInt & 255) );
}
@colindean
colindean / generate_bitcoin_address.sh
Last active Jul 4, 2021
Bitcoin address generator in bash
View generate_bitcoin_address.sh
#!/bin/bash
#
# This is free and unencumbered software released into the public domain.
#
# Requires bc, dc, openssl, xxd
#
# by grondilu from https://bitcointalk.org/index.php?topic=10970.msg156708#msg156708
base58=({1..9} {A..H} {J..N} {P..Z} {a..k} {m..z})
bitcoinregex="^[$(printf "%s" "${base58[@]}")]{34}$"