Can you name some of the common HDFS shell commands?

Yes, I can provide you a list of some common HDFS shell commands that are used frequently in Hadoop management and operations. Note that these commands start with ‘hdfs dfs‘ or ‘hadoop fs‘. Here are some of them:

1. **Listing Files and Directories:**

hdfs dfs -ls /path/to/directory

2. **Creating Directories:**

hdfs dfs -mkdir /path/to/new/directory

3. **Copying Files from Local FileSystem to HDFS:**

hdfs dfs -put /path/to/local/file /path/to/hdfs/directory

4. **Copying Files from HDFS to Local FileSystem:**

hdfs dfs -get /path/to/hdfs/file /path/to/local/directory

5. **Deleting Files and Directories:**

hdfs dfs -rm /path/to/file
hdfs dfs -rmdir /path/to/directory

6. **Moving Files and Directories in HDFS:**

hdfs dfs -mv /path/to/source /path/to/destination

7. **Checking Disk Usage:**

hdfs dfs -du /path/to/directory

8. **Displaying File Content:**

hdfs dfs -cat /path/to/file

9. **Checking HDFS Summary:**

hdfs dfsadmin -report

10. **Changing File and Directory Permissions:**

hdfs dfs -chmod [permissions] /path/to/file_or_directory

11. **Changing File Ownership and Group:**

hdfs dfs -chown username:groupname /path/to/file_or_directory