unmkinitramfs (8) - Linux Manuals

unmkinitramfs: extract content from an initramfs image

NAME

unmkinitramfs - extract content from an initramfs image

SYNOPSIS

unmkinitramfs [-v] initramfs-file directory
unmkinitramfs -h

DESCRIPTION

The unmkinitramfs command extracts the content of a given initramfs image using cpio. If the image contains multiple segments, each are passed to cpio in order.

OPTIONS

-h

Display usage information and exit.

-v

Display verbose messages about extraction.

USAGE EXAMPLES

Extract initramfs content of current running kernel:

unmkinitramfs /boot/initrd.img-$(uname -r) initramfs/

BUGS

unmkinitramfs cannot deal with multiple-segmented initramfs images, except where an early (uncompressed) initramfs with system firmware is prepended to the regular compressed initramfs.

AUTHOR

The initramfs-tools are written by Maximilian Attems <maks [at] debian.org> and numerous others.