Creating a Readable and Writable Subdirectory on the File System for Each User

Prerequisites

A file system has been created and can be mounted to the ECS by the root user. For details, see Creating a Local Directory for a File System.
You have obtained the mount point of the file system.

Procedure

Log in to the ECS as user root.
Run the following commands to add a common user under the root account. User Tom is added as an example.
```
adduser Tom
passwd Tom
```
Change the password of common user Tom as prompted. After the user is created, the home directory /home/Tom is automatically created.
Run the following command in the local directory of the root user to create a subdirectory.

According to 3 in Creating a Local Directory for a File System, the local directory of the root user is root001. Run the following command to create subdirectory Tom for common user Tom. Replace root001 with the actual local directory.
```
mkdir /root/root001/Tom
```
Run the following command to assign the read and write permissions of subdirectory Tom to common user Tom. Replace root001 with the actual local directory.
```
chown Tom:Tom /root/root001/Tom
```
After the subdirectory is created, run the following commands to check whether common user Tom has the read and write permissions on subdirectory Tom. See Figure 1.
```
cd /home
cd /root/root001
ll
```
Figure 1 Checking the permissions

The preceding command output indicates that user Tom has obtained the read and write permissions on subdirectory Tom.
Run the mount command to mount subdirectory root001/Tom to the home directory of Tom, /home/Tom. In the following command, xx-xxxxx-xx needs to be replaced with the region where the file system is located, and share-xxxx needs to be replaced with the actual file system. The first Tom needs to be replaced with the actual subdirectory name. See Figure 2.
```
mount -t nfs sfs-nas1.xx-xxxxx-xx.xxxxxxxxxx.com:/share-xxxx/Tom /home/Tom
```
Figure 2 Mounting the subdirectory

Run the following command to check whether the subdirectory has been mounted to the home directory of Tom. See Figure 3.
```
df -h
```
Figure 3 Checking the mounting result