1102

How to make #ubuntu folder for #chroot

https://en.wikipedia.org/wiki/Chroot

wget https://cdimage.ubuntu.com/ubuntu-base/releases/25.10/release/ubuntu-base-25.10-base-amd64.tar.gz
# Only 34 MB

wget https://cdimage.ubuntu.com/ubuntu-base/releases/25.10/release/SHA256SUMS

sha256sum -c SHA256SUMS 2>/dev/null

mkdir ubuntu-base

tar -xzf ubuntu-base-25.10-base-amd64.tar.gz -C ubuntu-base

cd ubuntu-base/

cp /etc/resolv.conf etc/resolv.conf

Create file inside:

mount --bind /dev  dev
mount --bind /proc proc
mount --bind /sys  sys
mount --bind /run  run
chroot . /bin/bash

and run from root (because requires CAP_SYS_CHROOT)