chroot · ThinkerQAQ

chroot

1. What Is chroot? A chroot in a Linux system is used to change the root directory. In a Linux system, the default directory structure begins with / ; chroot uses a specified location as the / location. 2. Why chroot Is Needed 2.1. Security Restrict

Operating Systems / LinuxCreated 09/03/2021Updated 09/03/20211 min readhistorical

This is a historical learning note and may contain outdated or incomplete understanding.

1. What Is chroot?

A chroot in a Linux system is used to change the root directory. In a Linux system, the default directory structure begins with /; chroot uses a specified location as the / location.

2. Why chroot Is Needed

2.1. Security

Restrict user privileges.

2.2. Isolation

Create a system directory structure isolated from the original system to facilitate user development.

3. How to Use chroot

mkdir -p new_root/bin
cp /bin/bash new_root/bin
cp -r /lib new_root
cp -r /lib64 new_root
sudo chroot new_root

4. chroot Principle

5. References

Linux chroot Command - CNBlogs