petrkohut

curl --insecure -v https://google.com 2>&1 | awk 'BEGIN { cert=0 } /^\* SSL connection/ { cert=1 } /^\*/ { if (cert) print }'

petrkohut

curl -o /dev/null -s -w "time_connect: %{time_connect}\ntime_starttransfer: %{time_starttransfer}\ntime_total: %{time_total}\n" https://www.seznam.cz/media/img/logo_v2.png

petrkohut

How to get into stopped container

https://stackoverflow.com/questions/32353055/how-to-start-a-stopped-docker-container-with-a-different-command

docker commit $CONTAINER_ID user/test_image

docker run -it --entrypoint=sh user/test_image

petrkohut

git log -n 1 --pretty=format:%H -- package.json

petrkohut

Lucine queries for search in Kibana

AND

field1: "something" AND field2: "something else"

OR

field1: "something" AND (field2: "something else" OR field2: "nothing")

NOT

Filter out all messages where field1 contains string "Petr"

petrkohut

image.json

{
  "builders": [
    {
      "type": "docker",
      "image": "ubuntu",
      "commit": true
    }
 ],

petrkohut

How to search empty string in Elasticsearch

{
  "query": {
    "filtered": {
      "filter": {
        "not": {
          "filter": {
            "range": {
 "yourFieldName": {}

petrkohut

TCP

sudo telnet 10.10.0.195 9300

UDP

sudo nmap -p 9300 -sU -P0 10.10.0.195

Open ports

petrkohut

Keybase proof

I hereby claim:

• I am petrkohut on github.
• I am petrkohut (https://keybase.io/petrkohut) on keybase.
• I have a public key whose fingerprint is 44CE B549 9C7C D49F 5AFC 0562 7661 C898 200A C505

To claim this, I am signing this object:

petrkohut

Debuging in Node.js

Install node-inspector

npm i -g node-inspector

Run node-inspector on a background

node-inspector &