bradlucas

Clojure Spec Notes

Introducing clojure.spec

23 May 2016 Rich Hickey

• https://clojure.org/news/2016/05/23/introducing-clojure-spec

clojure.spec - Rationale and Overview

• https://clojure.org/about/spec

bradlucas

#!/bin/bash
# from here: http://www.codingsteps.com/install-redis-2-6-on-amazon-ec2-linux-ami-or-centos/
# and here: https://raw.github.com/gist/257849/9f1e627e0b7dbe68882fa2b7bdb1b2b263522004/redis-server
###############################################
# To use: 
# wget https://gist.githubusercontent.com/four43/e00d01ca084c5972f229/raw/install-redis.sh
# chmod 777 install-redis.sh
# ./install-redis.sh
###############################################
echo "*****************************************"

bradlucas

(defroutes app
  (GET "/" [] "<h1>Index route</h1>")
  (route/not-found "<h1>Page not found</h1>"))

(defn fake-request [routes uri method & params]
  (let [localhost "127.0.0.1"]
    (routes {:server-port 80
             :server-name localhost
             :remote-addr localhost
             :uri uri

bradlucas

To rename a group of file's extensions in Git

Build the GLOB before hand and verify with ls


for i in $(find . -iname "GLOB"); do
    git mv "$i" "$(echo $i | rev | cut -d '.' -f 2- | rev).org";
done

bradlucas

Testing Meterstick with ax-meterstick-dev

bradlucas

#!/bin/bash
# from here: http://www.codingsteps.com/install-redis-2-6-on-amazon-ec2-linux-ami-or-centos/
# and here: https://raw.github.com/gist/257849/9f1e627e0b7dbe68882fa2b7bdb1b2b263522004/redis-server
###############################################
# To use: 
# wget https://raw.github.com/gist/2776679/04ca3bbb9f085b192f6aca945120fe12d59f15f9/install-redis.sh
# chmod 777 install-redis.sh
# ./install-redis.sh
###############################################
echo "*****************************************"

bradlucas

;;
;; NS CHEATSHEET
;;
;; * :require makes functions available with a namespace prefix
;;  and optionally can refer functions to the current ns.
;;
;; * :import refers Java classes to the current namespace.
;;
;; * :refer-clojure affects availability of built-in (clojure.core)
;;   functions.

bradlucas

Show Postgres Running Queries

SELECT datname,usename,procpid,client_addr,waiting,query_start,current_query FROM pg_stat_activity ;

@see http://chrismiles.info/systemsadmin/databases/articles/viewing-current-postgresql-queries/

bradlucas

Install Go and git, Download Etcd from github and build

sudo yum install -y golang git
go version
sudo git clone https://github.com/coreos/etcd
cd etcd
sudo ./build

bradlucas

#!/bin/bash
# Startup script for etcd
#
# chkconfig: 2345 20 80
# description: Starts and stops etcd

. /etc/init.d/functions

prog="etcd"
ETCD_BIN=$(which etcd 2> /dev/null)