Dependency Installation

The first thing to do is run the following installation commands, which will be explained later

apt-get install binutils debootstrap

Then you should choose a place to configure chroot. We recommend using will use /var/chroot directory

Create the necessary directories

You need a create chroot folder

mkdir -p /var/chroot

This completes the setup of the preliminary steps. Next, you need to copy all the commands and their dependencies. This requires a command interpreter, so let’s copy bash.

mkdir -p /var/chroot/bin
cp /bin/bash /var/chroot/bin

Having looked at all the dependencies, you can run the following program

ldd /bin/bash

If you are using (for example) a 32-bit version, it will look just like this:

linux-gate.so.1 =>  (0xb773e000)
libtinfo.so.5 => /lib/i386-linux-gnu/libtinfo.so.5 (0xb7718000)
libdl.so.2 => /lib/i386-linux-gnu/libdl.so.2 (0xb7714000)
libc.so.6 => /lib/i386-linux-gnu/libc.so.6 (0xb75c3000)
/lib/ld-linux.so.2 (0xb773f000)

The following is the copying of files:

mkdir -p /var/chroot/lib 
mkdir -p /var/chroot/lib/i386-linux-gnu
cp /lib/i386-linux-gnu/libtinfo.so.5 /var/chroot/lib/i386-linux-gnu
cp /lib/i386-linux-gnu/libdl.so.2 /var/chroot/lib/i386-linux-gnu
cp /lib/i386-linux-gnu/libc.so.6 /var/chroot/lib/i386-linux-gnu

Testing the environment

Checking the bash setting

chroot /var/chroot

If you need to connect to the network in chroot, you will need to run the following commands:

mkdir -p /var/chroot/etc
cp /etc/resolv.conf /var/chroot/etc
cp /etc/gai.conf /var/chroot/etc