Bash将挂载的文件夹检测为目录

Question

I am creating this bashs script that has a folder path, passed as a paramter.

And if it detects that paramter is a directory, then it uses it as a path for script work.

But for some reason, it denies treating this folder path as a directory.

Which has befuddled me to no end.

This is a mounted external 3tb hard drive, works fine, no issues, what so ever.

But is mounted as /media/wdmybook/

I have this testing script to help me debug and identify the problem.

#!/bin/bash
DIR="/media/wdmybook/folder"

if grep -qs '$DIR' /proc/mounts; then
    echo "It's mounted."
else
echo "It's not mounted."
fi

if [ ! -d "$DIR" ]; then
    echo "Directory does not exist!"
elif [ "$DIR" != -d ]; then
    echo "Not a Directory"
else
    echo "Path is okay"
fi

But everytime I run it, it detects the path as an invalid directory, and it is not mounted.

So what am I missing or not seeing?

Is this a permissions issue?

I am running this on Debian Wheezy XFCE.

Answer 1

You should rewrite your if condition to something like that:

if [ ! -e "$DIR" ]; then
    echo "Directory does not exist!"
elif [ ! -d "$DIR" ]; then
    echo "Not a Directory"
else
    echo "Path is okay"
fi

For details see man test