Asked by: Naoual Ouarti
technology and computing operating systems

What is the purpose of chroot?

Last Updated: 30th January, 2020

Change root directory to the supplied directory newroot and executes command, if supplied, or an interactive copy of the user's shell

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Keeping this in consideration, why we use chroot in Linux?

chroot command in Linux/Unix system is used to change the root directory. Every process/command in Linux/Unix like systems has a current working directory called root directory.

“chroot” command can be very useful:

  • To create a test environment.
  • To recover the system or password.
  • To reinstall the bootloader.

Similarly, is chroot safe? chroot and non-root users When you take the whole system into consideration, you do not gain any real security from your chroot(). Putting a regular user in a chroot() will prevent them from having access to the rest of the system. This means using a chroot is not less secure, but it is not more secure either.

Also, how do you use chroot jail?

Using chroot utility

  1. To use a chroot jail, use the following command (new_root must be an existing directory):
  2. The new_root directory becomes the artificial root directory.
  3. For example, assuming SHELL is set to /bin/bash, and the /home/user/jail directory exists, running the chroot command results in the following:

How do I exit chroot?

We can exit from chrooted environment by pressing Ctrl-D. chroot can be used to build chroot jail to protect server services for preventing attacker to gain complete access to the server by creating chroot jails.

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