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install pip & venv

sudo apt-get install python3 python3-pip python3-venv

upgrade pip, setuptools & wheel

python3 -m pip install --upgrade pip setuptools wheel 

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import json
import scipy
import scipy.misc
import scipy.cluster
import webcolors

COLOR_TO_COLOR_GROUP = {
    u'pink': u'pink',
    u'lightpink': u'pink',
    u'hotpink': u'pink',

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# list topics
bin/kafka-topics.sh --list --zookeeper localhost:2181

# list groups
bin/kafka-consumer-groups.sh --bootstrap-server localhost:9092  --list

# describe group
bin/kafka-consumer-groups.sh --bootstrap-server localhost:9092 --group console-consumer-59433 --describe

# list partitions and offsets

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/**
 * Originally posted at: (not available now)
 * http://blogs.sun.com/andreas/resource/InstallCert.java
 * Use:
 * java InstallCert hostname
 * Example:
 *% java InstallCert ecc.fedora.redhat.com
 */

import javax.net.ssl.*;

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install nvm

curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.3/install.sh | bash

install node

nvm install v18.14.2

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#!/bin/bash

assert_exit_status() {

  lambda() {
    local val_fd=$(echo $@ | tr -d ' ' | cut -d':' -f2)
    local arg=$1
    shift
    shift
    local cmd=$(echo $@ | xargs -E ':')

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#!/bin/bash

[[ -z $DBG ]] && DBG=0

now() {
   date +"%Y-%m-%d %H:%M:%S"
}

eecho() {
    local label=$1

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check what listening on port 80

sudo ss -nltp | grep 80

encrypting compressed folder

tar cz my_folder/ | openssl enc -aes-256-cbc -e > encrypted.tar.gz.enc

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# legend

^ means ctrl

# ctags

:!ctags *.m
:ta[g][!] tagstring # edit the file containing tagstring
:po[p][!]           # pop the tagstack by one element
:tags

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#!/bin/bash

DBG=0

dbg() {
  [[ $DBG == 1 ]] && (1>&2 echo "[DEBUG] : "$1)
}

info() {
  echo "[INFO] : $1"