You are at the newest post.

## December022010

### Reference Cards

reference cards provide a useful summary of certain scripting concepts. The foregoing text treats these matters in more depth, as well as giving usage examples.

## October282010

### ZFS Cheatsheet · Col's Tech

The three primary goals of ZFS are:

1. Highly scalable (128-bit) data repository
3. Guaranteed on disk data integrity

## June112010

### Git Reference

This is the Git reference site. This is meant to be a quick reference for learning and remembering the most important and commonly used Git commands. The commands are organized into sections of the type of operation you may be trying to do, and will preset the common options and commands needed to accomplish these common tasks.

Each section will link to the next section, so it can be used as a tutorial. Every page will also link to more in-depth Git documentation such as the offical manual pages and relevant sections in the Pro Git book, so you can learn more about any of the commands. First, we'll start with thinking about source code management like Git does.

## March152010

### Visual Guide to NoSQL Systems - Nathan Hurst's Blog

There are so many NoSQL systems these days that it's hard to get a quick overview of the major trade-offs involved when evaluating relational and non-relational systems in non-single-server environments. I've developed this visual primer with quite a lot of help (see credits at the end), and it's still a work in progress, so let me know if you see anything misplaced or missing, and I'll fix it.

## October112009

### Lava's IPv6 VLSM / CIDR Reference Chart

# Useable addresses: Network size minus two for Network & Broadcast and: # IPv6 uses 8 sets of 4 hex values, 16 bits each (128bit total) # /48 ISP "site assignments" have 65k possible subnets: bourne$for a in {1..65536}; do printf "%04X\n"$a; done # Withing a /48, any combination of /49 ---> /64 are valid supernets (departmental, facility, function, other organizational model): \$ ipv6gen 2001:0DC6:FF2B::/48 63|more # ...normally three or four more hosts are used for: 1) Switch VLAN1 2) Router Interface or 3) Two HSRP interfaces at .253 & .254 # "Route Summarization" = "Route Aggregation" = "Supernetting" # "terminal ip netmask-format [bitcount|decimal|hex]" on Cisco IOS to show netmasks as Dotted Decimal v.s. Hex # Print this document and keep on wall in cubical at all times. Memorize for fun. Quiz your spouse, offspring, inlaws, etc. # #include <std/disclaimer.h> in the event that a typo within snowballs your entire corporate network

## September282009

### Kurztipp: selbstsigniertes OpenSSL-Zertifikat mit einem Befehl :: WE ARE ROOT

openssl req -new -newkey rsa:1024 -days 365 -nodes -x509 -keyout www.example.com.pem -out www.example.com.pem

## August052009

### Bash Programming Cheat Sheet

Older posts are this way If this message doesn't go away, click anywhere on the page to continue loading posts.