Allow ping with iptables

Allow incoming:

iptables -A INPUT  -p icmp --icmp-type 8 -m state --state NEW,ESTABLISHED,RELATED -j ACCEPT
iptables -A OUTPUT -p icmp --icmp-type 0 -m state --state ESTABLISHED,RELATED -j ACCEPT

Allow outgoing:

iptables -A OUTPUT -p icmp --icmp-type 8 -m state --state NEW,ESTABLISHED,RELATED -j ACCEPT
iptables -A …
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Making time lapses

Instructions

  1. Make a new directory and copy only the images that are used for the timelapse.
mkdir /tmp/tl
cp timelapse*.jpg /tmp/tl/
  1. Resize the images to a certain size. (Optional):

    for i in *.JPG; do echo -e "$i...\c"; convert "$i" -resize 1920x1080 "$i"; echo done; done
    
  2. Create …

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Nginx Redirect

Problem

Recently I purchased a domain to replace my no longer free subdomain provided by dyndns. I wanted to redirect all of my content from the subdomain to my new domain. Easy. However, I also wanted the root landing page to display information about the move rather than simply throwing …

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LDAP for Django

Introduction

This document will include the author's entire notes on installing and configuring ldap for django.

Installation

  1. Create a directory in /opt:

    mkdir /opt/that
    
  2. Create a virtualenv in that directory:

    virtualenv example
    

Make sure that you also source the directory before running pip commands. i.e.:

source /opt/that …
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Digital Ocean API Wrapper

I found myself wanting to take snapshots of my digital ocean droplets. I wrote a quick python script that wraps the api and allows me to snapshot my droplet on a regular basis.

#! /usr/bin/env python

import requests
import time

API_KEY=''
CLI_ID=''

def fetch(path, opts={}):
    opts['api_key'] = API_KEY …
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Getting a random file from a directory

I had a massive directory of files that I wanted to pick a few random files to test before I imported the whole set. For this post lets say I want 100 random files from some_dir and moving them to this_dir.

First you could use:

$ LIST=$(ls -1 ./some_dir | sort …
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LVM resize

My root partition recently ran out of space and I needed to resize it.

So I booted into a live usb and then, after activating my volume groups:

$ sudo vgchange -a y

I looked up lvm resize online and came up with the command:

$ sudo lvextend -L+10G /dev/mapper …
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Extension ram files

I was helping my girlfriend watch some videos that she needed for a class that she was having trouble playing on her mac. Once I saw that ubuntu wasn't able to play them out of the box I looked at the extension and found a solution on ubuntu forums.

The …

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