Linux command
chroot 命令
安全
权限或系统影响较大，执行前请核对目标。
常用示例
Run a command with a different root directory
sudo chroot [path/to/new_root] [command]
Run an interactive shell in the new root
sudo chroot [path/to/new_root]
Specify a custom shell to run
sudo chroot [path/to/new_root] /bin/bash
Specify user and group for the command
sudo chroot --userspec=[user:group] [path/to/new_root] [command]
Change to a specific directory after chrooting
sudo chroot [path/to/new_root] /bin/sh -c "cd /home && ls"
说明
chroot changes the root directory of the calling process to the specified path and runs a command within that environment. All pathname lookups starting with / will be relative to the new root. If no command is specified, chroot runs the shell from the SHELL environment variable or defaults to /bin/sh. The new root directory must contain all necessary files, libraries, and device nodes required by the command being executed.
参数
- NEWROOT
- The directory to use as the new root filesystem
- COMMAND
- Command to run in the chroot environment
- ARG
- Arguments to pass to the command
- --userspec=_USER:GROUP_
- Specify user and group (name or ID) to run as
- --groups=_GROUPS_
- Specify supplementary groups
- --skip-chdir
- Do not change working directory to /
FAQ
What is the chroot command used for?
chroot changes the root directory of the calling process to the specified path and runs a command within that environment. All pathname lookups starting with / will be relative to the new root. If no command is specified, chroot runs the shell from the SHELL environment variable or defaults to /bin/sh. The new root directory must contain all necessary files, libraries, and device nodes required by the command being executed.
How do I run a basic chroot example?
Run `sudo chroot [path/to/new_root] [command]` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
What does NEWROOT do in chroot?
The directory to use as the new root filesystem