问确定是否在SSD上的跨平台方式？

EN

$ cat /sys/block/sda/queue/rotational
0

#!/bin/bash

set -e

# emits the device path to the filesystem where the first argument lives
fs_mount="$(df -h $1 | tail -n 1 | awk '{print $1;}')"

# if it's a symlink, resolve it
if [ -L "$fs_mount" ]; then
  fs_mount="$(readlink -f $fs_mount)"
fi

# if it's a device-mapper like LVM or dm-crypt, then we need to be special
if echo $fs_mount | grep -oP '/dev/dm-\d+' >/dev/null ; then
  # get the first device slave
  first_slave_dev="$(find /sys/block/$(basename $fs_mount)/slaves -mindepth 1 -maxdepth 1 -exec readlink -f {} \; | head -1)"
  # actual device
  dev="$(cd $first_slave_dev/../ && basename $(pwd))"
else
  dev="$(basename $fs_mount | grep -ioP '[a-z]+(?=\d+\b)')"
fi

# now that we have the actual device, we simply ask whether it's rotational or not
if [[ $(cat /sys/block/$dev/queue/rotational) -eq 0 ]]; then
  echo "The filesystem hosting $1 is not on an rotational media."
else
  echo "The filesystem hosting $1 is on rotational media."
fi