deevis

# To backup portainer volume
_backup_time=$(date +"%F_%H_%M%P"); sudo tar cvfz /mnt2/docker/backups/portainer/portainer_backup_${_backup_time}.tar.gz /var/lib/docker/volumes/portainer_data

# To run new portainer container with ports and volumes and local docker.sock
docker run -p 8000:8000 -p 9000:9000 --name portainer -v /var/run/docker.sock:/var/run/docker.sock -v portainer_data:/data portainer/portainer-ce:latest

deevis

create database prisoners;
CREATE USER 'prisoners'@'%' IDENTIFIED BY '???????????';
GRANT ALL PRIVILEGES ON prisoners.* TO 'prisoners'@'%' WITH GRANT OPTION;
FLUSH PRIVILEGES;

deevis

# on host (eg: 192.168.0.111)
sudo apt-get install samba samba-common-bin
sudo vi /etc/samba/smb.conf

# create directory with correct permissions that can be exposed via Samba
 sudo mkdir -p /mnt/drive01
 sudo chown -R pi:pi /mnt/drive01

# add sections within /etc/samba/smb.conf
[Pi Media Share]

deevis

#!/bin/bash

_now=$(date +"%F_%H_%M%P")
pushd /mnt2/backups/mysql/
for db_name in `mysql -h 127.0.0.1 -u root -e "show databases;" | grep "\|" | grep -v "_schema" | grep -v "mysql" | tail -n +2`; do
  echo  "Backing up ${db_name}"
  filename="${db_name}_${_now}.sql"
  mysqldump -h 127.0.0.1 -u root $db_name > ${filename}
done
tar cvfz mysql_pi_${_now}.tar.gz $(ls *${_now}*.sql) && rm *${_now}*.sql

deevis

# originally a solution for Codewars.com: Path Finder #3: the Alpinist
class PathFinder

  # Options for display_strategy: [nil, :highlight, :animate]
  def initialize(display_strategy =nil)
    @display_strategy = display_strategy
  end

  # Options for display_strategy: [nil, :highlight, :animate]
  def path_finder(maze, display_strategy = nil)

deevis

for effect in useState useEffect useContext useReducer useCallback useMemo useRef useImperativeHandle useLayoutEffect useDebugValue; do RESULT=`find client/src -iname "*.js" | xargs grep -s -E "import React.*use.*from" | grep $effect | wc -l`; echo "$RESULT  $effect"; done | sort -n -r


#     166  useState
#     128  useEffect
#      23  useCallback
#       8  useRef
#       1  useReducer
#       1  useContext
#       0  useMemo

deevis

# our flags ordered by the bit that they'll toggle
# new flags MUST be added to the BEGINNING of the array!
FLAGS = [:a, :b, :c, :d, :e, :f]

build_flags = -> (*performed) { n = FLAGS.length; val = 0; FLAGS.each{|v| n -= 1; val += 2 ** n if performed.index(v)}; val}

required = build_flags.(:a, :b, :c, :f)
=> 57
required.to_s(2)
 => "111001"

deevis

IFS=$'\n'
for line in `ps -o pid,etime,%mem,command ax | grep launch | grep -v "grep"`; do echo "---------------------------------"; echo $line; echo $line | awk '{print $1}' | xargs pmap | grep "total"; done; echo ""

deevis

for ns in `kubectl get pods -A | grep my_project_name | grep "^.*[4-9]\dd$" | awk {'print $1'} | uniq`;do kubectl delete namespace $ns --namespace $ns; done

deevis

# To build music_log.txt
# ------------------------------------
# sudo apt-get install ffmpeg
# SAVEIFS=$IFS
# IFS=$(echo -en "\n\b")
# for file in `find . -iname "*.mp3"`;do echo "=========================="; echo $file; ffprobe $file 2>&1 | grep -A 12 'Metadata:'; done > music_log.txt

require 'awesome_print'
# require 'byebug'