wbsouza

1. change from buster to bullseye
2. sudo apt install libnet-cidr-lite-perl libtext-csv-xs-perl libgeoip2-perl

for day of writing, there is a problem with building by dkms this package xtables-addons-common so wehave to install this from source

1. sudo apt install pkg-config libxtables-dev
2. wget http://inai.de/files/xtables-addons/xtables-addons-3.13.tar.xz
3. tar xf xtables-addons-3.13.tar.xz
4. cd xtables-addons-3.13/
5. ./configure
6. make

wbsouza

• 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. Credentials
• 0.5. info
• 0.6. projects
• 0.7. zones & regions
• 0.8. Organization
• 0.9. billing

wbsouza

Useful PostgreSQL Queries & Commands

All sizes in MB, change /1024/1024 to /1024/1024/1024 for GB.

Databases sizes

Without system databases

select
datname as database,
(pg_database_size(datname)/1024/1024) as size

wbsouza

# force yum to update all the caches avoiding the error
#  [Errno 14] HTTP Error 404 - Not Found
echo "http_caching=packages" >> /etc/yum.conf
yum clean all
yum makecache
yum update

# reload sysctl configs
sudo sysctl --system

wbsouza

Installing mailx

yum -y update

yum install -y mailx

We can now start sending e-mails using

wbsouza

upstream odoo9_xmlrpc {
	server <xmlrpc address>;
}

upstream odoo9_longpolling {
	server <longpolling address>;
}

server {
	listen 80;

wbsouza

version: '3.6'
services:
  oracle:
    image: wisecoding/oracle-database:11g.20180719
    container_name: docker_oracle_11g
    hostname: oracle.wisecoding.net
    shm_size: '2g'
    networks:
      wisenet:
        ipv4_address: 172.18.0.100

wbsouza

# changing the # of cpus
VBoxManage modifyvm default --cpus 2

#changing the memory size
VBoxManage modifyvm default --memory 4096

# change the 
VBoxManage internalcommands sethduuid "/path/disk.vdi" $(uuidgen)

# changing the hard disk

wbsouza

import java.security.SecureRandom;
import java.util.*;

public class MapAnalysis {

    public static void main(String args[]) {

        int size = 1000000;
        Random random = new SecureRandom();
        Integer data[] = new Integer[size];