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#!/bin/sh
set -eu
usage()
{
echo "Usage: $(basename $0) <initramfs file>"
}
if [ "$#" -eq 0 ] ; then
usage >&2
exit 1
fi
cpio_args="--extract --quiet --list"
OPTIONS=`getopt -o hl --long help,long -n "$0" -- "$@"`
# Check for non-GNU getopt
if [ $? != 0 ] ; then echo "W: non-GNU getopt" >&2 ; exit 1 ; fi
eval set -- "$OPTIONS"
while true; do
case "$1" in
-h|--help)
usage
exit 0
;;
-l|--long)
cpio_args="${cpio_args:+${cpio_args} --verbose}"
shift
;;
--)
shift
break
;;
*)
echo "Internal error!" >&2
exit 1
esac
done
for initramfs in "$@" ; do
if ! [ -r "${initramfs}" ] ; then
echo "Specified file could not be read." >&2
exit 1
else
echo "${initramfs}"
zcat "${initramfs}" | cpio ${cpio_args}
fi
done
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