initrd-2.6.9-5.EL.img

解壓

gzip -dc initrd-2.6.9-5.EL.img |cpio -div

壓縮

find xxx yyy | cpio -ov -H crc |gzip -9> zz.cgz

解壓縮 .cgz文件

cpio -divm <**.cgz

打開initrd.img文件

mv initrd.img initrd.gz

gzip -d initrd.gz

mount -o loop initrd /dir

gzip

-d decompress

-c write on standard output, keep original files unchanged

-9 compress better

cpio

-d Create leading directories where needed

-i Extract files from an archive (run in copy-in mode)

-v Verbosely list the files processed

-m Retain previous file modification times when creating files

-o Create the archive (run in copy-out mode)

-H --format=FORMAT Use given archive FORMAT