smrchy

const http = require('http')
const rpc = require('./rpc')

/**
 * Pets service.
 */

class Pets {
  constructor(db = []) {

smrchy

-- FUNCTION: public.base36_decode(character varying)

-- DROP FUNCTION public.base36_decode(character varying);

CREATE OR REPLACE FUNCTION public.base36_decode(
	base36 character varying)
    RETURNS bigint
    LANGUAGE 'plpgsql'

    COST 100

smrchy

<!---
Parts of this are based on Tim Dawe's 
http://amazonsig.riaforge.org

and 

Joe Danziger's Amazon S3 REST Wrapper
http://amazons3.riaforge.org/

Written by Patrick Liess

smrchy

#host running out of memory!
ALERT HighMem
  IF 100 -(node_memory_MemFree + node_memory_Buffers + node_memory_Cached) / node_memory_MemTotal* 100 > 80
  FOR 1m
  WITH {
    severity="page"
  }
  SUMMARY "Instance {{$labels.host}} has high memory consumption"
  DESCRIPTION "{{$labels.host}} of job {{$labels.job}} has less than 40% of memory available for more than 1 minutes."

smrchy

Intersection / Difference / Union Hints

Which elements are new in new_array compared to old_array

old_array = [1, 4, 5]
new_array = [1, 2, 3, 4]

_.difference(new_array, old_array)

smrchy

# SYSTEM: open a file as admin with a special app
sudo open -a /Applications/Utilities/Console.app/ /usr/local/mysql/data/Mathiass-iMac.log

# SYSTEM: Create a symbolic link
ln -s /Path/to/original/folder New-folder-name

# SYSTEM: show long running clock
clear; while true; do echo -e \\b\\b\\b\\b\\b\\b\\b\\b`date +%T`\\c ; sleep 1; done

# SYSTEM: Set ENV var

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# Build dependencies for OpenResty.
sudo apt-get install build-essential libpcre3-dev libssl-dev libgeoip-dev

# Install standard Nginx first so that you get the relevant service scripts installed too
sudo apt-get install nginx

# If you want to access Postgres via Nginx
sudo apt-get install libpq-dev

smrchy

Remove unused Docker containers and images

This removes all containers that are not running:

docker ps -q -a | xargs docker rm

Remove images:

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

smrchy

sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 36A1D7869245C8950F966E92D8576A8BA88D21E9
sudo sh -c "echo deb https://get.docker.com/ubuntu docker main > /etc/apt/sources.list.d/docker.list"
sudo apt-get update
sudo apt-get install -y lxc-docker
docker -v

smrchy

for line in `docker ps | awk '{print $1}' | grep -v CONTAINER`; do docker ps | grep $line | awk '{printf $NF" "}' && echo $(( `cat /sys/fs/cgroup/memory/docker/$line*/memory.usage_in_bytes` / 1024 / 1024 ))MB ; done