0x524c

sudo apt-get install ssl-cert
sudo make-ssl-cert generate-default-snakeoil
sudo usermod --append --groups ssl-cert yyuu
ls -l /etc/ssl/certs/ssl-cert-snakeoil.pem /etc/ssl/private/ssl-cert-snakeoil.key

0x524c

Methods of Signing with GPG

Last updated March 28, 2021

There are now two ways to approach this:

1. Using gpg and generating keys
2. Using Kryptonite by krypt.co

This Gist explains how to do this using gpg in a step-by-step fashion. Kryptonite is actually wickedly easy to use-but you will still need to follow the instructions

0x524c

MYSQL_ROOT_PASSWORD=rootpass

0x524c

#!/usr/bin/env bash
#
# This script is for installing python 3.x.x
#
# Copyright (c) 2021 itheo.tech
# MIT License
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

0x524c

GCC compiler optimization for ARM-based systems

2017-03-03 fm4dd

The gcc compiler can optimize code by taking advantage of CPU specific features. Especially for ARM CPU's, this can have impact on application performance. ARM CPU's, even under the same architecture, could be implemented with different versions of floating point units (FPU). Utilizing full FPU potential improves performance of heavier operating systems such as full Linux distributions.

-mcpu, -march: Defining the CPU type and architecture

These flags can both be used to set the CPU type. Setting one or the other is sufficient.

0x524c

#!/bin/bash
# Compile and install/update (or install via Apt) FFmpeg Codecs
# Compile and install/update FFmpeg suite
# Compile with hardware acceleration
# Modified from https://retroresolution.com/compiling-ffmpeg-from-source-code-all-in-one-script/

echo "Begining Installation of FFmpeg Suite"

#Update APT Repository
echo "Updating the APT repository information"

0x524c

# Kernel
kernel=zImage
#initramfs ramdisk.img 0x01f00000

# Audio
dtparam=audio=on

# Camera
#disable_camera_led=1
#gpu_mem=128

0x524c

How to optimize / defrag ext4 filesystem

Make sure the target filesystem is sane

Open up the terminal and run:

sudo fsck.ext4 -y -f -v /dev/<disk/partition>

0x524c

#!/bin/bash

# Note that there's no libdrm because this lib cause errors

sudo apt update -y && sudo apt upgrade -y

sudo apt-get -y install \
    autoconf \
    automake \
    libgstreamer1.0-dev \

0x524c

#!/bin/bash -x
# make_arm64_rpi_kernel_debs.sh
# Builds arm64 debian packages from the CURRENT rpi firmware repository kernel which is installed by:
# sudo rpi-update
# This runs on an arm64 host with arm64 compilation tools... 
# or with some sort of cross-compilation setup.
# Debs are put in $workdir/build
#
# This will NOT work in Raspbian unless you have an arm64 compilation
# environment setup. Appears to work on