• Discover the hidden secrets of a monolithic .img file
• Mount the partitions in an .img file using losetup, kpartx and mount
• Create your own .img files and use them as virtual disks
• Write out your virtual disk image to a thumb drive (or any drive for that matter) for use later

Install packages

$ sudo aptitude install kpartx xz-utils

Decompress image

Source list

vim /etc/apt/sources.list

deb http://deb.debian.org/debian buster main contrib non-free
deb-src http://deb.debian.org/debian buster main contrib non-free

deb http://deb.debian.org/debian-security/ buster/updates main contrib non-free
deb-src http://deb.debian.org/debian-security/ buster/updates main contrib non-free

deb http://deb.debian.org/debian buster-updates main contrib non-free
deb-src http://deb.debian.org/debian buster-updates main contrib non-free

Source list

vim /etc/apt/sources.list

deb http://deb.debian.org/debian buster main contrib non-free
deb-src http://deb.debian.org/debian buster main contrib non-free

deb http://deb.debian.org/debian-security/ buster/updates main contrib non-free
deb-src http://deb.debian.org/debian-security/ buster/updates main contrib non-free

deb http://deb.debian.org/debian buster-updates main contrib non-free
deb-src http://deb.debian.org/debian buster-updates main contrib non-free

Source list

vim /etc/apt/sources.list

deb http://ftp.fi.debian.org/debian/ stretch main non-free contrib
deb-src http://ftp.fi.debian.org/debian/ stretch main non-free contrib

deb http://security.debian.org/debian-security stretch/updates main contrib non-free
deb-src http://security.debian.org/debian-security stretch/updates main contrib non-free

# stretch-updates, previously known as 'volatile'
deb http://ftp.fi.debian.org/debian/ stretch-updates main contrib non-free

Source list

vim /etc/apt/sources.list

deb http://ftp.fi.debian.org/debian/ stretch main non-free contrib
deb-src http://ftp.fi.debian.org/debian/ stretch main non-free contrib

deb http://security.debian.org/debian-security stretch/updates main contrib non-free
deb-src http://security.debian.org/debian-security stretch/updates main contrib non-free

# stretch-updates, previously known as 'volatile'
deb http://ftp.fi.debian.org/debian/ stretch-updates main contrib non-free

Obtenemos java

Antes de descargar una versión de java debemos saber la versión del S.O. esto es, si es x86 o amd64. Para ello ejecutamos lo siguiente:

# uname -a
Linux Hetz01 3.2.0-38-generic #61-Ubuntu SMP Tue Feb 19 12:18:21 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

Ahora descargamos java a nuestro equipo:

Vamos a crear un par de claves GPG2 basados en cifrado Ed25519. Lo realizaremos en la consola aunque también se puede realizar utilizando "Contraseñas y claves de cifrado".

A continuación, invocamos gpg en la consola con la opción --expert y --full-gen-key.