ghazanhaider

sudo yum install docker
sudo systemctl start docke
sudo systemctl enable docker.service
sudo usermod -aG docker $USER
sudo curl -SL https://github.com/docker/compose/releases/latest/download/docker-compose-linux-$(uname -m) -o /usr/libexec/docker/cli-plugins/docker-compose
sudo chmod +x /usr/libexec/docker/cli-plugins/docker-compose
docker compose version
# Shows: "Docker Compose version v5.0.2"
cat <<EOF > docker-compose.yml
version: '3'

ghazanhaider

Bus

• Bus probes all devices
• Bus registers all drivers usable for the bus
• Bus then 'binds' driver to each device discovered:
  • When device_register is called for a device, it is inserted into the end of this list.
  • The bus object also contains a list of all drivers of that bus type.
  • These are the two events which trigger driver binding.
  • If a match is found, the device's driver field is set to the driver and the driver's probe callback is called.
  • This gives the driver a chance to verify that it really does support the hardware, and that it's in a working state.
• When a driver is attached to a device, the device is inserted into the driver's list of devices.

ghazanhaider

# Microchip SAM-BA is only released for x86_64 architecture and will not run on arm64
# These steps allow it to be run under Ubuntu arm64 using qemu-user successfully


- Install Ubuntu (24.04.01)
- sudo apt install:
qemu-user
qemu-user-static
gcc-aarch64-linux-gnu
binutils-aarch64-linux-gnu

ghazanhaider

# How to increase the size of an LVM based disk

# Step1: Increase underlying disk size (qemu, vmware etc)

# Step2:

cfdisk /dev/nvme0n1p3
pvresize /dev/nvme0n1p3
lvresize -l +100%FREE /dev/mapper/ubuntu--vg-ubuntu--lv -r

ghazanhaider

#include<stdio.h>

// task functions
void taskOne (void) { puts("Thread 1\n"); }
void taskTwo (void) { puts("Thread 2\n"); }
void taskThree (void) { puts("Thread 3\n"); }

// Function array of tasks
void *funcArray[] = {
        &taskOne,

ghazanhaider

# Simplest server socket example
# 

import socket
s = socket.socket()
s.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)
s.bind(('127.0.0.1',8080))
s.listen(1)

conn,addr = s.accept()

ghazanhaider

# Create CA

openssl genrsa -des3 -out ./ssl/rootCA.key -passout file:./ssl/pass 2048
# Check: openssl rsa -in ssl/rootCA.key -check

openssl req -x509 -new -nodes -key ./ssl/rootCA.key -sha256 -days 1024 -out ./ssl/rootCA.pem -passin file:./ssl/pass -subj "/C=PK/ST=Balochistan/L=Quetta/O=Hajiabad/CN=ca.ghazan.work"
# Check: openssl x509 -in ./ssl/rootCA.pem -text


# Create self signed cert

ghazanhaider

# Basic Checks

AT+COPS? // Show network operator
AT+COPN  // All network operators

# SMS

AT+CMFG=1 // Enable txt mode SMS
AT+CMGS="+NUMBER"  // Start SMS to this number, end in 0x1a (no newline)
AT+CMGR=1  // Receive and read SMS

ghazanhaider

<?xml version="1.0" encoding="utf-8"?>
<unattend xmlns="urn:schemas-microsoft-com:unattend">
    <servicing></servicing>
    <settings pass="windowsPE">
        <component name="Microsoft-Windows-International-Core-WinPE" processorArchitecture="amd64" publicKeyToken="31bf3856ad364e35" language="neutral" versionScope="nonSxS" xmlns:wcm="http://schemas.microsoft.com/WMIConfig/2002/State" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
            <SetupUILanguage>
                <UILanguage>en-US</UILanguage>
            </SetupUILanguage>
            <InputLocale>en-US</InputLocale>
            <UILanguage>en-US</UILanguage>

ghazanhaider

; forward zonefile for test.com

$ORIGIN test.com.
$TTL 1h
test.com.  IN  SOA   ns.test.com. username.test.com. ( 2007120710 1d 2h 4w 1h )
test.com.  IN  NS    ns
test.com.  IN  A     192.168.2.1
ns         IN  A     192.168.2.1
win        IN  A     192.168.2.2
vcenter    IN  A     192.168.2.10