Off the record

Docker on glcoud

Nicolas — 2018-07-05T06:02:14+02:00

1 sudo apt-get update

   2  sudo apt-get install nginx
   3  sudo apt-get update
   4  sudo apt-get install nginx
   5  nginx -v
   6  curl 129.0.0.1
   7  sudo systemctl start nginx
   8  sudo systemctl status nginx
   9  curl http://127.0.0.1
  10  sudo apt-get install docker.io
  11  sudo docker images
  12  sudo docker pull nginx:1.10.0
  13  sudo docker images
  14  sudo dpkg -l | grep nginx
  15  sudo systemctl stop nginx
  16  sudo dpkg -l | grep nginx
  17  sudo docker pull nginx:1.10.3
  18  sudo apt-get update
  19  sudo apt-get install nginx
  20  sudo dpkg -l | grep nginx
  21  sudo docker images
  22  sudo docker remove nginx:1.10.0
  23  docker help
  24  sudo docker rm nginx:1.10.0
  25  sudo docker rmi nginx:1.10.0
  26  sudo docker images
  27  sudo dpkg -l | grep nginx
  28  sudo docker images
  29  sudo docker run -d nginx 1.10.3
  30  sudo docker images
  31  sudo docker rim nginx:latest
  32  sudo docker rmi nginx:latest
  33  docker ps
  34  sudo docker ps
  35  sudo docker rmi nginx
  36  sudo docker run -d nginx:1.10.3
  37  sudo docker ps
  38  sudo docker run -d nginx:1.10.3
  39  sudo docker ps
  40  sudo docker run -d nginx:1.10.0
  41  sudo docker ps
  42  sudo docker stop ngingx:1.10.0
  43  sudo docker stop
  44  sudo docker stop %1
  45  sudo docker stop f7eb5251903e
  46  sudo docker ps
  47  sudo docker inspect 9fd0e1a65bc4
  48  curl http://172.17.0.3
  49  sudo docker ps
  50  sud docker inspect pensive_morse
  51  sud docker inspect --format ' .NetworkSettings.IPAddress ' pensive_morse
  52  sudo docker inspect pensive_morse
  53  sudo docker inspect --format ' .NetworkSettings.IPAddress ' pensive_morse
  54  CN='pensive_morse'
  55  sudo docker inspect --format ' .NetworkSettings.IPAddress ' $CN

 133  sudo docker build -t 1.0.0 .
 134  cat Dockerfile
 135  sudo docker images
 
 143  sudo docker inspect hungry_tesla
 144  curl http://172.17.0.3
 145  curl http://172.17.0.2
 146  curl http://172.17.0.1
 147  sudo docker ps
 148  sudo docker inspect heuristic_payne
 149  curl http://172.17.0.4
 150  sudo docker ps
 151  sudo docker ps -a
 152  sudo docker ps -aq

 154  curl http://172.17.0.4
 155  sudo docker inspect heuristic_payne
 156  curl http://172.17.0.4/

 158  sudo docker inspect hungry_tesla
 159  curl http://172.17.0.3
 160  docker tag -h
 161  sudo docker tag monolith:1.0.0 nicolasb/monolith:1.0.0
 162  sudo docker login
 163  sudo docker push nicolasb/monolith:1.0.0

 165  sudo docker tag hello:1.0.0 nicolasb/hello:1.0.0
 166  sudo docker push nicolasb/hello:1.0.0
 167  sudo docker tag hello:1.0.0 nicol4sb/hello:1.0.0
 168  sudo docker push nicol4sb/hello:1.0.0
 169  sudo docker tag monolith:1.0.0 nicol4sb/monolith:1.0.0
 170  sudo docker push nicolasb/monolith:1.0.0
 171  sudo docker push nicol4sb/monolith:1.0.0
 172  sudo docker ps
 173  sudo docker tag monolith:1.0.0 nicol4sb/auth:1.0.0
 174  sudo docker tag auth:1.0.0 nicol4sb/auth:1.0.0
 175  sudo docker push nicol4sb/auth:1.0.0

Typescript

Nicolas — 2017-10-27T23:59:51+02:00

Const - block scoped - better than var which has a global scope
Types - boolean, number, string, symbol, null, undefined
type inference : const tax = 20;

interface Puppy {

 name: string;
 age: number;

};

const realPuppy: Puppy = {

 name: 'Pikachu',
 age: 1

};

Parameterized types
const betterCats: Array = [

 {name: 'Simba', age: 22},
 {name: 'Aslan', age: 9999}

];

classes and inheritance export class = pubilc

Filter is an Array method that allows you to generate a new array keeping only the truthy values that are provided from the returning callback

numbers.filter(number => number > 30)

Enums Async / Await Getters / Setters Destructuring Arrow functions

Git

Nicolas — 2017-09-11T21:11:41+02:00

Git clone abc/def/something.git

git status

git checkout -b my-branch

# some edits

git status

git add my-file-to-commit

git status // tells you in which branch you're working and changes

git commit // commits what is to be comitted

git push origin my-branch // pushes changes from my-branch to the original repo

git status

Docker and continuous deployment workshop

Nicolas — 2017-09-11T20:25:35+02:00

https://github.com/gogits/gogs/tree/master/docker

docker volume ls

docker ps -a

docker start

docker stop

Playing with ncat and Python http.server

Nicolas — 2017-07-26T15:41:46+02:00

open a webserver and browse

python3 -m http.server 8080

open a listening socket on port 9000

ncat -l 9000

upon browser call at localhost:9000 - see the HTTP GET request come in and answer it as follows :

HTTP/1.1 307 Temporary Redirect Location: https://www.eff.org/

HTTP/1.1 200 OK Content-length: 10 Content-type: text/plain

1234567890

see 1234567890 print in the browser

IntelliJ IDEA shortcuts

Nicolas — 2017-07-25T16:10:37+02:00

Errors ⌘0
Project ⌘1
Version Control ⌘9
Run ⌘4
Debug ⌘5
Terminal ⌥F12
Editor ⎋ = esc

Distraction free mode : ⌘⇧F12
Quick search action : ⇧⌘A
highlight usages of a symbol ⌘⇧F7
auto-complete ⌃Space

Duplicate a line ⌘D
Comment a line ⌘/
Delete a line ⌘⌫
statement completion ⇧⌘⏎
recent files ⌘E
navigate to class (Object) ⌘O (to file ⌘⇧O)

navigate within the structure of a file ⌘F12
search everywhere double ⇧
quick outline ⌥space = option space
show implementation ⌘⌥B (command option B)

Rename ⇧F6
Extract variable ⌥⌘V
Extract field ⌥⌘F
Extract a constant ⌥⌘C
Extract a method ⌥⌘M
Extract a parameter ⌥⌘P
Inline ⌥⌘N
Copy current file F5
Move F6
Refactor this ⌃T

find usages ⌥F7
Reformat code ⌥⌘L
Auto-indent lines ⌃⌥I
Optimize imports ⌃⌥O

navigate to versioning tools ctrl-V
Commit changes ⌘K
Update project ⌘T
Push commits ⇧⌘K

build project ⌘F9

Toggle breakpoint ⌘F8
Step into F7
Smart step into ⇧F7
Step over F8
Step out ⇧F8
Resume ⌥⌘R
Evaluate expression ⌥F8

sout is the keyword for System.out.println
iter is the foreach loop code template gen keyword

https://www.jetbrains.com/help/idea/eclipse.html

test hard drive speed

Nicolas — 2015-02-28T15:16:46+01:00

dd if=/dev/zero bs=100k of=/Users/nick/tstfile count=1024 2>&1 | grep sec | awk '{print $1 / 1024 / 1024 / $5, "MB/sec" }'

disque normal : 33,3333 MB/sec

SSD : 133.884 MB/sec

Series

Nicolas — 2015-02-16T14:03:13+01:00

Mad men
True detective
House of cards
top of the lake
Elementary
GIIIIRLS
DEXXXTER
The good wife (suggested by wife, ironically)
Breaking bad
Downton abbey

Listen to any internet radio on your old vintage FM radio !

Nicolas — 2014-08-09T04:45:34+02:00

Build a simple FM transmitter with a raspberry pi and a piece of wire for the antenna

1) Get a raspberry pi

2) get whatever Linux on it

3) install sox to read internet streams : $ sudo apt-get install sox libsox-fmt-all

4) wget http://www.icrobotics.co.uk/wiki/images/c/c3/Pifm.tar.gz tar -xvf Pifm.tar.gz

5) start the bbc on 103.3FM

$ sox -v .9 -t mp3 http://bbcwssc.ic.llnwd.net/stream/bbcwssc_mp1_ws-eieuk -t wav --input-buffer 80000 -r 22050 -c 1 - | sudo /home/pi/pifm/pifm - 103.3

6) improve the range from 10cm to 100m by plugging a piece of wire in the 4th GPIO pin. I took an old headset, cut at both ends, plugged. no soldering needed, google to find which GPIO is the 4th one.

7) replace the bbc stream with France Info or France Inter or whatever stream : France Bleu Breizh, Tendance Ouest Rouen, Kiss FM dance or whatever obscure campus radio that streams on internet. Yay.

http://www.listenlive.eu/france.html

8) play your mp3s in the house sox -v .9 -t mp3 ./someCrap.mp3 -t wav -r 22050 -c 1 - | sudo /home/pi/pifm/pifm - 100

Make a still movie with gopro and Mac

Nicolas — 2013-12-07T05:46:07+01:00

$ sips -Z 1920 *.JPG

$ mencoder mf://*.JPG -mf fps=8 -ovc xvid -xvidencopts bitrate=5000 -o output-mpeg.avi

mencoder output-mpeg.avi -o cropped.avi -vf crop=1720:1440:200:0 -ovc xvid -xvidencopts bitrate=5000

sips is a osx tool, similar tools to resize images are available on linux.