arch-chroot:tldr:667b7
The command "arch-chroot ${path-to-new-root}" is used in Arch Linux to change the root directory to a different location. Here's how it works:
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"arch-chroot" is a tool provided by Arch Linux that allows you to run commands in a chroot environment. Chroot stands for "change root" and is a Unix system call that changes the root directory for the current running process and its children.
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"${path-to-new-root}" is a placeholder that you need to replace with the actual path to the directory you want to set as the new root.
When you run this command, it essentially creates a new environment with the specified directory as the root. All subsequent commands that you run after executing the "arch-chroot" command will be performed as if the specified directory is the root of the file system.
This can be useful in several scenarios, such as:
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Repairing a broken or misconfigured system: By changing the root to a different location, you can access the files and directories on the broken system and perform tasks like installing or upgrading packages, modifying system configurations, or repairing the bootloader.
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Installing a new operating system: Before installing a new OS, you may want to set up the necessary environment, mount partitions, or perform other actions. By changing the root, you can ensure that those actions are performed in the context of the new root directory.
It's important to note that the "arch-chroot" command should be executed with superuser privileges (root) or using the "sudo" command.