Lilian yayuniversal

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.

Installing Arch Linux on an LUKS Encrypted root and booting from UEFI.

Sources

Before you begin

For Gummiboot, EFI must be enabled in the bios setup BEFORE YOU START the installation process. It will yell at you if this is not enabled.
If you do not have UEFI, it may be easier to use rEFInd or Grub2

Minecraft - Versioning your saves

This is a tutorial show how to version your saves using Git.

Q: Why would anyone go through this process?
A: Because if you do, you can undo an otherwise un-undoable action, such as swimming in a pit of lava and accidentally dropping your Notch armpit forged special edition diamond pickaxe and your 35 stacks of cobblestone.

	// This is free and unencumbered software released into the public domain.
	//
	// Anyone is free to copy, modify, publish, use, compile, sell, or distribute
	// this software, either in source code form or as a compiled binary, for any
	// purpose, commercial or non-commercial, and by any means.
	//
	// In jurisdictions that recognize copyright laws, the author or authors of this
	// software dedicate any and all copyright interest in the software to the
	// public domain. We make this dedication for the benefit of the public at large
	// and to the detriment of our heirs and successors. We intend this dedication

	# Install ARCH Linux with encrypted file-system and UEFI
	# The official installation guide (https://wiki.archlinux.org/index.php/Installation_Guide) contains a more verbose description.

	# Download the archiso image from https://www.archlinux.org/
	# Copy to a usb-drive
	dd if=archlinux.img of=/dev/sdX bs=16M && sync # on linux

	# Boot from the usb. If the usb fails to boot, make sure that secure boot is disabled in the BIOS configuration.

	# Set swedish keymap