MohamedAlaa

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

chrismeyersfsu

#define ANALOG_IN 0

void setup() {
  Serial.begin(9600); 
  //Serial.begin(115200); 
}

void loop() {
  int val = analogRead(ANALOG_IN);                                              
  Serial.write( 0xff );                                                         

justinweiss

# Call scopes directly from your URL params:
#
#     @products = Product.filter(params.slice(:status, :location, :starts_with))
module Filterable
  extend ActiveSupport::Concern

  module ClassMethods
    
    # Call the class methods with names based on the keys in <tt>filtering_params</tt>
    # with their associated values. For example, "{ status: 'delayed' }" would call 

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)

ngsmrk

stats = Sidekiq::Stats.new

stats.queues

stats.enqueued

stats.processed

stats.failed

asciant

Rails 4.2 environment with AngularJS and Foundation 5

New rails project

rails new my_app -T -d postgresql

Update the Gemfile

Add:

nikallass

#!/bin/bash

# update apt-get
export DEBIAN_FRONTEND="noninteractive"
sudo apt-get update

# remove previously installed Docker
sudo apt-get remove docker docker-engine docker.io* lxc-docker*

# install dependencies 4 cert

skylock

How to Change Open Files Limit on OS X and macOS

To check the current limits on your Mac OS X system, run in terminal:

launchctl limit maxfiles
ulimit -a

Steps

arikfr

1. Make sure the domain you picked points at the IP of your Redash server.
2. Switch to the root user (sudo su).
3. Create a folder named nginx in /opt/redash.
4. Create in the nginx folder two additional folders: certs and certs-data.
5. Create the file /opt/redash/nginx/nginx.conf and place the following in it: (replace example.redashapp.com with your domain name)

   upstream redash {
       server redash:5000;
   }
   

skozz

- Add `gem 'tzinfo-data'` to the Gemfile. 
- Add `tzdata` to the Dockerfile
```
RUN apk update \
    && apk add build-base \
       tzdata
```
- Build `docker-compose build` or `docker-compose up --build`
- Enjoy the life