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# show regions available
aws ec2 describe-regions --output text --query 'Regions[*].RegionName'

output:

ap-south-1	eu-west-1	ap-southeast-1	ap-southeast-2	eu-central-1	ap-northeast-2	ap-northeast-1	us-east-1	sa-east-1	us-west-1	us-west-2

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# clean-up downloaded apps archives
sudo rm /var/cache/apt/archives/*

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# disk usage recursive
sudo du / -h --si --max-depth=3 | grep '[0-9]G\>'

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# list security groups for ec2 instances
aws ec2 describe-security-groups  --query "SecurityGroups[].GroupId | [0]"     --output text

output:

si-22642348 sg-11662348

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# list security groups for ec2 instances
aws ec2 describe-security-groups  --query "SecurityGroups[].GroupId | [0]"     --output text

output:

si-22642348 sg-11662348

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# 1. Creates an IAM user account in AWS
# 2. Randomly generates a password for the account using apg
# 3. Adds the user to the Administrators group
# 4. Creates a login profile for the user (set password and set flag to force user to reset password upon initial logon)

#!/bin/bash

if [ $# -eq 0 ]; then
    echo "Usage: $0 <username>"
    exit 1

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  roleArn="arn:aws:iam::"
  roleArn+="$destinationAccountNumber"
  roleArn+=":role/"
  roleArn+="$rolename"

  serialArn="arn:aws:iam::"
  serialArn+="$sourceAccountNumber"
  serialArn+=":mfa/"
  serialArn+="$username"

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#!/bin/bash

local CONF="$LE_WORKING_DIR/dnsapi/dns-route53-python.conf"
[ -r "$CONF" ] && . $CONF

if [ -z "$AWS" ]; then
  AWS=`which aws 2>/dev/null`
fi

#Usage: add _acme-challenge.www.domain.com "XKrx...."

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#!/bin/bash
#
# Simple script to generate a basic bind configuration for home/lab use
#

# Local config - adjust as required
OWNIP=192.168.111.3
NETWORK=192.168.111.0
NETMASK=/24
DNS1=192.168.111.1

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options {
        directory "/var/cache/bind";

    
        forwarders {
                208.67.222.222;  # OpenDNS (1/2)
                151.202.0.85;   # Verizon
                198.6.1.3;      # uu.net
                # ======================================
                141.155.0.68;    # Verizon (NY, USA)