ngpestelos

May 8, 2018

I wrote this four years ago, so instead use this command:

$ docker rmi $(docker images -q -f dangling=true)

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)

soheilhy

Virtual Hosts on nginx (CSC309)

When hosting our web applications, we often have one public IP address (i.e., an IP address visible to the outside world) using which we want to host multiple web apps. For example, one may wants to host three different web apps respectively for example1.com, example2.com, and example1.com/images on the same machine using a single IP address.

How can we do that? Well, the good news is Internet browsers

sheerun

# Generates necessary certificates to ~/.docker
#
# Usage:
#   bundle install
#   ruby certgen.rb <domain>

require 'certificate_authority'
require 'fileutils'

if ARGV.empty?

ungoldman

How do you POST a JSON file with curl??

You can post a json file with curl like so:

curl -X POST -H "Content-Type: application/json" -d @FILENAME DESTINATION

so for example:

cliffano

# This gist is compatible with Ansible 1.x .
# For Ansible 2.x , please check out:
# - https://gist.github.com/dmsimard/cd706de198c85a8255f6
# - https://github.com/n0ts/ansible-human_log

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#

telent

App configuration in environment variables: for and against

For (some of these as per the 12 factor principles) 

1) they are are easy to change between deploys without changing any code

2) unlike config files, there is little chance of them being checked
into the code repo accidentally

3) unlike custom config files, or other config mechanisms such as Java

KyleJamesWalker

This was working on Vagrant 1.4.3 (Mac).

#HOST#

File: ~/.ssh/config

Host vagrant.*
ForwardAgent yes

File: Vagrantfile

mikestecker

Install Apache/PHP 5.5.9 on Fedora 20/19, CentOS/RHEL 6.5/5.10

This guide shows howto install Apache HTTP Server (httpd) with PHP 5.5.9 and following modules on Fedora 20/19/18/17, CentOS 6.5/6.4/6.3/6.2/6.1/6/5.10 and Red Hat (RHEL) 6.5/6.4/6.3/6.2/6.1/6/5.10 systems.

1. Change root user

---

su -
## OR ##

sudo -i

charypar

---
ssl_certificates:
  - certificate_src: secure.example.com.pem
    certificate_dest: /etc/ssl/certs/secure.example.com.pem
    key_src: secure.example.com.protected.key
    key_dest: /etc/ssl/private/secure.example.com.protected.key
    key_stripped: /etc/ssl/private/secure_example.com.key
    key_password: "{{ssl_passphrase}}"