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NodeJS Quick Reference
Comment Variable String Integer Boolean Array Object For Loop // Alternate syntax for (var i in things) // Iterate dictionary' ) }} While Loop If, Else if, Else Function Class set stuff(stuff) get stuff() showStuff() }' ) }} continue reading
Frack You Nvidia
Remove Nvidia drivers from GRUB after black screen.Frack You Nvidia
Why ? I am currently using Ubuntu 1604 as the OS on my laptop. It generally works well apart from one thing ... The FRACKING NVIDIA DRIVERS. Nvidia you can go and die in a pit fire. At least 3 or 4 times in the last 6 months the driver update has stopped the system from booting. It gets to a...Controlling Vagrant Box Management IP
Control the IP address a Vagrant box receives on the management interface.Controlling Vagrant Box Management IP
One of the quirks of Vagrants Virtualbox provider is you cannot configure the IP address of the management interface. It's a core design principal of the project that the management interface IP of a box is configured via DHCP. The Virtualbox provider uses port forwarding with a NAT network...Using The Libvirt Provider With Vagrant
Install libvirt and the vagrant-libvirt provider for use with Vagrant.Using The Libvirt Provider With Vagrant
Libvirt is a set of software tools to manage virtual machine components such as network and storage. Libvirt provdies an abstraction layer hiding the differences across hypervisors such as KVM, Xen, VMWare ESXi, etc.. to avoid having to worry about the intricacies of each hypervisors...Linux Networking
Configuring network components on Linux.Linux Networking
Configuring network components in linux can differ from distribution to distribution. I usually find myself searching for the information found here so this is part documentation for me and part blog post for anyone else who cares to read past the introduction. This post covers various...Ansible AWX Part 1
Install Ansible AWX on CentOS 7 minimal server.Ansible AWX Part 1
Ansible AWX is the upstream open source project to Ansible Tower. This is the first part of a series on Ansible AWX. In this part we will install Ansible AWX. Code versions used for this post Centos 7 - minimal 1705.02 (vagrant box) Python - 2.7.13 Ansible - 2.4.0 docker - 1.12.6 ...Ruby Quick Reference
Best Practices Ruby Style Guide Rails Testing Best Practices Comment Variable String Stings are mutable in Ruby HERE Doc HERE are used for multi-line strings Symbol Symbols are similar to strings except they are immutable Integer Boolean Array Hash # New syntax - Ruby >= 1.9 For Loop #...continue reading
Python Quick Reference
Best Practices Python Style Guide Comment Doc String Variable String Integer Boolean List Tuple Dictionary For Loop While Loop If, Elif, Else Function Class Using Modules continue reading
Network Notes: DHCP
Dynamic host configuration protocol (DHCP) is used to automatically assign IP addresses to hosts in a network. DHCP is defined in rfc2131. DHCP DHCP uses UDP as its transport protocol. Messages are passed on ports 67 (client to server) and 68 (server to client). There are four...continue reading
Network Notes: ARP
Address resolution protocol (ARP) is a method for mapping IPv4 addresses to MAC addresses. There are a few different flavours of ARP that have evolved over the years. ARP Regular ARP maps an unknown MAC address to a known IPv4 address and is defined in RFC826. ARP Operation ...continue reading
NMAP Quick Reference
NMAP quick reference guide.NMAP Quick Reference
NMAP is a tool for network discovery and auditing. This is not a comprehensive tutorial, only a quick reference source. Consult the man pages and/or documentation for indepth explanation of commands. Port Scan Top Ports Scan the top N number of ports cmd nmap --top-ports 10 www.google.com UDP...NMAP Quick Reference
TCP SYN Scan TCP SYN scans do not perform a full TCP 3-way handshake. A RST is sent to the server when a SYN/ACK is received. The flow between the NMAP client and server looks like this: NMAPSERVER NMAPSYN-->SERVER NMAPSERVER NMAPSERVER ...continue reading