kalkov

Command Editing Shortcuts

Ctrl+a – go to the start of the command line

Ctrl+e – go to the end of the command line

Ctrl+k – delete from cursor to the end of the command line

Ctrl+u – delete from cursor to the start of the command line

Ctrl+w – delete from cursor to start of word (i.e. delete backwards one word)

kalkov

#!/usr/bin/env bash     

# If there's already a kubeconfig file in ~/.kube/config it will import that too and all the contexts
DEFAULT_KUBECONFIG_FILE="$HOME/.kube/config"
if test -f "${DEFAULT_KUBECONFIG_FILE}"
then
  export KUBECONFIG="$DEFAULT_KUBECONFIG_FILE"
fi

# Your additional kubeconfig files should be inside ~/.kube/config-files

kalkov

SELECT
    table,
    formatReadableSize(sum(bytes)) AS size,
    min(min_date) AS min_date,
    max(max_date) AS max_date
FROM system.parts
WHERE active
GROUP BY table
ORDER BY sum(bytes) DESC

kalkov

Utilities you'll care about

All these are already installed on epyc.

• kafkacat (conda install -c conda-forge kafkacat)

• kt (grab it from https://github.com/fgeller/kt/releases)

• kafka-* (come with kafka, if you yum install if from Confluent's repo, or via Docker if you're so inclined). Warning -- JVM based and dreadfully slow.

• jq (conda install -c conda-forge jq or use your favorite package manager)

kalkov

[
   {
      "id":"a845c14d.ab2b9",
      "type":"tab",
      "label":"Flow 1",
      "disabled":false,
      "info":""
   },
   {
      "id":"606753ef.2621fc",

kalkov

const data = msg.payload

const voltage = data[0]*0.1
const current = data[1]*0.1
const phase = data[2]*0.1
const power = data[3]
const power_reactive = data[4]
const power_apparent = data[5]
const power_efficiency = data[6]*0.1
const total_power = (data[7] * (1 << 16) + data[8]) / 100

kalkov

# place in ~/.config/Code/User/settings.json
{
    "editor.rulers": [100,117],
    "workbench.activityBar.visible": false,
    "editor.minimap.enabled": false,
    "workbench.statusBar.feedback.visible": false,
    "window.zoomLevel": 0,
    "breadcrumbs.enabled": true,
    "files.exclude": {
        "**/*.pyc": true

kalkov

How to install virtualenv:

Install pip first

sudo apt-get install python3-pip

Then install virtualenv using pip3

sudo pip3 install virtualenv 

kalkov

# ------------------------------------------------------------------------------
# tlp - Parameters for power saving
# See full explanation: http://linrunner.de/en/tlp/docs/tlp-configuration.html

# dir: /etc/default/tlp

# Hint: some features are disabled by default, remove the leading # to enable
# them.

# Set to 0 to disable, 1 to enable TLP.

kalkov

Common Options

-#, --progress-bar Make curl display a simple progress bar instead of the more informational standard meter.

-b, --cookie <name=data> Supply cookie with request. If no =, then specifies the cookie file to use (see -c).

-c, --cookie-jar <file name> File to save response cookies to.