Linux chroot command

Updated: 05/04/2019 by Computer Hope
chroot command

On Unix-like operating systems, the chroot command runs a command or an interactive shell from another directory, and treats that directory as root. This process is called changing root and the new root directory is named chroot jail.

For a history of the command, and other information, see our chroot definition.

This page describes the GNU/Linux version of chroot.



chroot runs COMMAND with the root directory set to NEWROOT.

OPTION may be one of the following:

--userspec=USER:GROUP Specify the user and group to use. USER and GROUP may be specified by name or numeric ID.
--groups=G_LIST Specify supplementary groups as g1,g2,..,gN
--help Display a help message, and exit.
--version Output version information, and exit.

If no command is specified, chroot executes the command '${SHELL} -i'. By default, this is '/bin/sh -i'. This will drop you into a sh shell as root in the NEWROOT directory.

chdir — The system function for changing the working directory.