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#!/bin/bash
set -e

localTime=$(date '+%Y%m%d_%H%M%S' -d "$(curl -s --head http://google.com | grep ^Date: | sed 's/Date: //g')")
mkdir -p ~/backups/mongodb/dump-$localTime

mongodump --db edxapp --gzip -o ~/backups/mongodb/dump-$localTime -u 'admin' -p 'MONGO_ADMIN_PASSWORD' --authenticationDatabase admin
mongodump --db cs_comments_service --gzip -o ~/backups/mongodb/dump-$localTime -u 'admin' -p 'MONGO_ADMIN_PASSWORD' --authenticationDatabase admin

tar -C ~/backups/mongodb/ -cvpf ~/backups/mongodb/dump-$localTime.tgz dump-$localTime

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Python

Encode & Decode URL

Python2

$ alias urldecode='python -c "import sys, urllib as ul; \
    print ul.unquote_plus(sys.argv[1])"'

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#!/bin/bash

# sudo iptables -t nat -I POSTROUTING -m comment --comment "NAT the src ip" -d 192.168.42.12 -o ppp0 -j MASQUERADE
sudo iptables -t nat -I POSTROUTING -m comment --comment "NAT the src ip" -d 192.168.42.12 -j MASQUERADE


sudo iptables -I FORWARD -d 192.168.42.12 -m comment --comment "Accept to forward winbox mikrotik traffic" -m tcp -p tcp --dport 800 -j ACCEPT
sudo iptables -I FORWARD -m comment --comment "Accept to forward winbox mikrotik return traffic" -s 192.168.42.12 -m tcp -p tcp --sport 800 -j ACCEPT
sudo iptables -t nat -I PREROUTING -m tcp -p tcp --dport 1001 -m comment --comment "redirect pkts to virtual machine" -j DNAT --to-destination 192.168.42.12:800

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#!/bin/bash
# Tested : Ubuntu 16.04

set -e

# Setup
mkdir mongo-pkg
cd mongo-pkg
wget https://repo.mongodb.org/apt/ubuntu/dists/xenial/mongodb-org/3.2/multiverse/binary-amd64/mongodb-{org-mongos,org-server,org-shell,org-tools,org}_3.2.16_amd64.deb
sudo dpkg -i *

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Open edX

Install Open edX Using Method Native Installation

Add some variables to your server

echo "export LC_ALL='en_US.UTF-8'" >> ~/.bashrc
echo "export LANG='en_US.UTF-8'" >> ~/.bashrc
echo "export LANGUAGE='en_US.UTF-8'" >> ~/.bashrc

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Chatwoot installation script

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Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

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Note: If you want to use main_y config, you need a directory of snippets.

$ tree snippets
snippets
├── self-signed.conf
├── ssl
│   ├── portal.crt
│   └── portal.key

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#!/usr/bin/expect

set timeout -1;
spawn {{django_dir}}/venv/bin/python manage.py changepassword {{admin_user}};
expect {
    "Password:" { exp_send "{{admin_pass}}\r" ; exp_continue }
    "Password (again):" { exp_send "{{admin_pass}}\r" ; exp_continue }
    eof
}

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#! /bin/bash

# [get_golang.sh](https://gist.github.com/n8henrie/1043443463a4a511acf98aaa4f8f0f69)
# Download latest Golang release for AMD64
# https://dl.google.com/go/go1.10.linux-amd64.tar.gz

set -euf -o pipefail
# Install pre-reqs
sudo apt-get install python3 git -y
o=$(python3 -c $'import os\nprint(os.get_blocking(0))\nos.set_blocking(0, True)')