JBlond

Recovering deleted files in Ubuntu with ext4 filesystem

Recently, I deleted some files by mistake in a Ubuntu machine with an ext4 fs. These notes document the steps I took to get them back.

Important

• this procedure assumes that the partition that contained the deleted files is different from the root partition, as that was the scenario with which I had to deal (deleted files were in my home dir). The procedure needs that the partition that contained the files is unmounted, so if the deleted files were in the root partition, the process would be a bit different (e.g. storing the fs journal in a USB stick, using a live CD/USB to boot and issue the commands, etc.)
• if something is not clear, you need more information, etc. check the sources below

With that out the way, let's begin.

JBlond

#!/bin/bash

echo "📱 Android Security Check startet..."

# Prüfen, ob Gerät verbunden ist
if ! adb devices | grep -w "device" > /dev/null; then
    echo "❌ Kein Gerät verbunden. Bitte USB-Debugging aktivieren und Gerät anschließen."
    exit 1
fi

JBlond

#!/usr/bin/env bash

# Get current remote URL
currentURL=$(git config --get remote.origin.url)

# Exit early if no remote URL is set
if [[ -z "$currentURL" ]]; then
    echo "No remote.origin.url is set. Nothing to do."
    exit 0
fi

JBlond

TrueNAS 13 QEMU Guest Agent

This is a guide for Installing and Configuring QEMU Guest Agent for TrueNAS 13. It is based on the QEMU Guest Agent and VirtIO Console driver from FreeBSD 13.

Requirements

Due to the TrueNAS kernel lacking certain FreeBSD drivers, it's necessary to download the FreeBSD 13 kernel, extract the VirtIO Console driver and integrate it into the TrueNAS system. This ensures TrueNAS compatibility with virtualized environments.

Required packages for this guide:

• VirtIO Console driver: Man Page

JBlond

import math 

class HumidityCalculator:
    def calculate_absolute_humidity(
        self, 
        relative_humidity: float, 
        temperature: float, 
        temperature_in_fahrenheit: bool = False, 
        is_relative_humidity_in_percent: bool = True
    ) -> float:

JBlond

#!/bin/bash
for i in {a..r}; do
    echo "Disk sd$i" $SN $MD
    smartctl -H /dev/sd$i | grep -v "smartctl " | grep -v "Copyright " | grep -v "=== START"
done

JBlond

# File: /etc/apache2/conf-available/markdown.conf
#
# Copyright (c) 2018 Shane F. Carr
#
# 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
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:

JBlond

#user  nobody;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;

JBlond

@echo off
IF "%~1" == "" GOTO noinput
@ping -n 1 %1 | find "TTL"
if ERRORLEVEL 1 (
	echo offline
) else (
	echo okay
)
GOTO end

JBlond

#!/bin/bash
cd /opt
mv observium observium_old
wget -Oobservium-community-latest.tar.gz https://www.observium.org/observium-community-latest.tar.gz
tar zxvf observium-community-latest.tar.gz
mv /opt/observium_old/rrd observium/
mv /opt/observium_old/logs observium/
mv /opt/observium_old/config.php observium/
/opt/observium/discovery.php -u