rootfs.cpio

압축해제

cpio

❯ file rootfs.cpio
rootfs.cpio: ASCII cpio archive (SVR4 with no CRC)

cpio -id -v < ../rootfs.cpio

cpio.gz

❯ file rootfs
rootfs: gzip compressed data, max compression, from Unix, original size modulo 2^32 10018816

mv rootfs rootfs.cpio.gz
gunzip ./rootfs.cpio.gz

cpio -id -v < ../rootfs.cpio

압축

find .| cpio -o --format=newc > ../rootfs.cpio