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|
#!/bin/bash
set -eu -o pipefail
dev="$1"
dir="$2"
img="$3"
cmd="$4"
echo
echo "unmount $dev"
sudo umount "$dev" || true
echo
echo "unpack $img to $dev"
pv "$img" | unxz | sudo dd of="$dev"
started="$(date +%s)"
echo
echo "mount $dev on $dir"
sudo mount "$dev" "$dir"
echo
echo "delete all files under $dir"
files="$dir/files"
case "$cmd" in
find)
find "$files" -delete
;;
rm)
rm -rf "$files"
;;
rsync)
tmp="$(mktemp -d)"
rsync -r --del "$tmp/." "$files/."
rmdir "$files"
;;
*)
echo "I don't know $cmd" 1>&2 ;
exit 1
;;
esac
echo
echo "unmount $dev"
sudo umount "$dev"
ended="$(date +%s)"
duration=$(("$ended" - "$started"))
echo
echo "seconds to delete: $duration"
echo
echo "done"
|
