akras14

Git Cheat Sheet

Commands

Getting Started

git init

or

Kartones

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

• -E: will describe the underlaying queries of the \ commands (cool for learning!)
• -l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)

jwalton

A Dashing widget which shows an image.

To use, in your dashboard.erb file:

<li data-row="1" data-col="1" data-sizex="3" data-sizey="2">
  <div data-id="picture" data-view="BigImage" data-image="http://i.imgur.com/JycUgrg.jpg"
    style="background-color:transparent;"
    data-max="true"
  ></div>

amussey

git: Prepend Ticket Information

To eliminate the need to constantly type out the ticket information at the beginning of a commit message, this script uses the built in git hook system to prepend commits with the ticket information from the branch name. For example, if your branch is named:

b-51392/fixed-minor-visual-bug

the hook will grab the ticket information at the beginning of the branch name and prepend it to your comments:

$ git commit -m "Test commit message"

[b-51392/fixed-minor-visual-bug 74cfe0e] B-51392: Test commit message.

amussey

CQL Database Injector

To run this, simply run:

python cassandra-cql.py hostname port script_file [-f]

This will soon be packaged for pip.

rowanu

Dashing Hotness Widget

Are you dashing? Are you hot? Then you need the Dashing Hotness Widget!

See the blog post for more details.

About

This widget is similar to the basic Number widget, except that the entire widget changes colour based on the value displayed. It is designed to draw attention to

petehamilton

Dashboards

• Team Dashboard - http://fdietz.github.io/team_dashboard/
• Geckoboard - http://www.geckoboard.com/ - Slick data dashboards.
• Leftronic - https://www.leftronic.com/ - Similar, doesn't seem quite as organised looking
• Dashing - http://shopify.github.io/dashing/ - Simple metric dashboards by Shopify. Widget list

Charting

• HighCharts - http://www.highcharts.com/ Not very inspiring but very widely used & performant
• Google Charts - https://developers.google.com/chart/ Again, not very inspiring but can be customised
• Flot - http://www.flotcharts.org/ Gorgeous slick HTML5 graphs

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

bhenerey

In a perfect world, where things are done well, not just quickly, I would expect to find the following when joining the company:

Documentation

• Accurate / up-to-date systems architecture diagram

• Accurate / up-to-date network diagram

• Out-of-hours support plan

• Incident management plan

erikh

#!/usr/bin/env sh

##
# This is script with usefull tips taken from:
#   https://github.com/mathiasbynens/dotfiles/blob/master/.osx
#
# install it:
#   curl -sL https://raw.github.com/gist/2108403/hack.sh | sh
#