# arch-chroot > Enhanced `chroot` command to help in the Arch Linux installation process. > More information: . - Start an interactive shell (`bash`, by default) in a new root directory: `arch-chroot {{path/to/new/root}}` - Specify the user (other than the current user) to run the shell as: `arch-chroot -u {{user}} {{path/to/new/root}}` - Run a custom command (instead of the default `bash`) in the new root directory: `arch-chroot {{path/to/new/root}} {{command}} {{command_arguments}}` - Specify the shell, other than the default `bash` (in this case, the `zsh` package should have been installed in the target system): `arch-chroot {{path/to/new/root}} {{zsh}}`