lsinitramfs - list content of an initramfs image

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

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

       The  lsinitramfs  command lists the content of given initramfs images. It allows one to quickly check the
       content of one (or multiple) specified initramfs files.

       lsinitramfs - list content of an initramfs image

-h     Display usage information and exit.

       -l     Display long and more verbose listing of initramfs content.

initramfs-tools(7), mkinitramfs(8), unmkinitramfs(8), update-initramfs(8).

initramfs-tools                                    2015/12/09                                     LSINITRAMFS(8)

lsinitramfs [-l] initramfs-file...
       lsinitramfs-h

       List initramfs content of current running kernel:

       lsinitramfs/boot/initrd.img-$(uname-r)

       List content of two initramfs files in verbose mode:

       lsinitramfs-l/boot/vmlinuz-2.6.31-grml64/boot/vmlinuz-2.6.33-grml64