e2image:tldr:3289d

The command you've provided is:

e2image -I ${-dev-sdXN} ${path-to-image_file}

This command is used to create an image of a specified block device or partition in a Linux file system.

Let's break down the command and its components:

• e2image: It is a tool in Linux used to create an image of an ext2/ext3/ext4 file system. It operates at the file system level, allowing you to back up a specific file system rather than the entire storage device.

• -I: This option is used to specify the source device or partition from which the image will be created.

• ${-dev-sdXN}: This is a placeholder representing the block device or partition you want to create an image of. It should be replaced with the actual device or partition identifier, such as /dev/sdXN. The 'X' typically represents a drive letter, and 'N' represents a partition number.

• ${path-to-image_file}: This is a placeholder representing the desired location and filename for the output image file that will be created by the e2image command. You should replace it with the actual path and name of the file, such as /path/to/image.img.

To use this command, you need to substitute ${-dev-sdXN} with the actual block device or partition identifier you want to back up, and ${path-to-image_file} with the desired location and name for the resulting image file.