Paul 94v1c8

There's not a complete hook system designed in Bash when compared with other modern shells. PROMPT_COMMAND variable is used as a hook in Bash, which is equivalent to precmd hook in ZSH, fish_prompt in Fish. For the time being, ZSH is the only shell I've known that has a chpwd hook builtin.

PROMPT_COMMAND

If set, the value is interpreted as a command to execute before the printing of each primary prompt ($PS1).

https://www.gnu.org/savannah-checkouts/gnu/bash/manual/bash.html#Bash-Variables

`chpwd` Hook in Bash

Electron apps

Slide deck frameworks supporting Markdown source

Run commands on remote Docker host

This is how to connect to another host with your docker client, without modifying your local Docker installation or when you don't have a local Docker installation.

Enable Docker Remote API

First be sure to enable the Docker Remote API on the remote host.

This can easily be done with a container.
For HTTP connection use jarkt/docker-remote-api.

Android fastboot flashing

Here are some instructions on how to successfully flash a new Android System Image.

Preparation

First download and extract the Android System Image that you want to flash. I'll be using hammerhead-mob30h, which is the May security update for my Nexus 5 (2013).

Extract the archive and enter the directory. You'll also want to extract the image-*.zip file as well (image-hammerhead-mob30h.zip in my case), which contains the other img files.

cd ~/Downloads/image-hammerhead-mob30h

Add the following chunk to your existing ISC dhcpd.conf file.

if exists user-class and ( option user-class = "iPXE" ) {
    filename "http://boot.smidsrod.lan/boot.ipxe";
}
else {
    filename "undionly.kpxe";
}

(or see https://gist.github.com/4008017 for a more elaborate setup

	# should works on any cloud-init enabled hypervisor (openstack.. )

	# start from a normal ubuntu 20.04 install as minimal was not available for ARM64
	# Since ARM64 machines has higher RAM, Shrinking is desired but not necessary. Instead we will increase tmpfs to 1700MB

	# Getting root (if sudo -i doesn't work then set a root password beforehand using 'sudo passwd root'

	sudo -i

	# make sure we are on the highest kernel, so we can delete all the others ...

	@echo off
	@title Microsoft Edge Uninstaller [Windows 10 LTSC 2021/21H1 Edition]
	ver

	echo+
	goto check_admin_permissions
	:check_admin_permissions
	echo Script must Run as Administrator! Detecting permissions...
	net session >nul 2>&1
	if %errorLevel% == 0 (

	ddns-update-style none;
	deny bootp; #default
	authoritative;

	include "/etc/dhcp/ipxe-option-space.conf";

	# GREEN (private network)
	subnet 10.1.1.0 netmask 255.255.255.0 {
	range 10.1.1.100 10.1.1.199;
	option subnet-mask 255.255.255.0;