b13n1u

• 0.1. References
• 0.2. Other cheatsheets
• 0.3. Manage multiple gcloud config configurations
  • 0.3.1. Switch gcloud context with gcloud config
• 0.4. Auth
• 0.5. info
• 0.6. projects
• 0.7. zones & regions
• 0.8. organization
• 0.9. billing

b13n1u

void loop()
{

  static uint32_t lastmin=65536;
  static uint32_t myfree;
  static uint16_t mymax;
  static uint8_t myfrag;
  ESP.getHeapStats(&myfree, &mymax, &myfrag);
 
  Serial.printf("(%d) -> free: %5d - max: %5d - frag: %3d%% <- \n", millis(), myfree, mymax, myfrag);

b13n1u

telnet of course :)

netcat

nc -zv -w 5 127.0.0.1 22

range:
nc -zv 127.0.0.1 22-23

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# Not so perfect collectd generic jmx plugin config for kafka mirrormaker
# You need to enable JMX for mirrormaker first.

# Documentation:
#   https://collectd.org/wiki/index.php/Plugin:Java

<Plugin java>
  <Plugin "GenericJMX">
   <MBean "classes">
      ObjectName "java.lang:type=ClassLoading"

b13n1u

[color]
    ui = true
[alias]
    lg = log --graph --pretty=format:'%Cred%h%Creset -%C(yellow)%d%Creset %s %Cgreen(%cr) %C(bold blue)<%an>%Creset' --abbrev-commit --date=relative
    st = status
    co = checkout
    reload = !git fetch --all && git checkout master && git reset --hard origin/master && git submodule update --init
    rev = push origin HEAD:refs/for/master

b13n1u

#!/usr/bin/ruby
require 'open-uri'
require 'nokogiri'
require 'uri'
require 'pushover'
require 'google_url_shortener'

#not really needed
Google::UrlShortener::Base.api_key = "API_KEY"  #your google url shortener api

b13n1u

find /var/lib/graphite/whisper -type f -name "*.wsp" -exec whisper-resize {} 10s:1d 1m:7d 5m:30d 15m:3y \;

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#nice log output
git config --global alias.lg "log --graph --pretty=format:'%Cred%h%Creset -%C(yellow)%d%Creset %s %Cgreen(%cr) %C(bold blue)<%an>%Creset' --abbrev-commit --date=relative"

#enable color 
git config --global color.ui true

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# use UTF8
set -g utf8
set-window-option -g utf8 on
set-option -g status-utf8 on

#display things in 256 colors
set -g default-terminal "screen-256color"

#scrollback history to 10000 lines
set -g history-limit 10000

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#Migrate i-mscp to a new server 
#the new imscp is already installed and does have a different IP than the old one

#1. Dump the DB and copy the i-MSCP backup to new server:
rsync -rave "ssh -l root" /var/www/imscp/backups 10.0.0.3:/var/tmp/imscp_old_backups

#2.Install the old config DB

#3. Copy all customer data:
rsync -rave "ssh -l root " /var/www/virtual/ 10.0.0.3:/var/www/virtual