File system types (ext4, xfs) in Linux CLI - Mini Project: Build & Apply

Check and Compare File System Types

📖 Scenario: You are managing a Linux server and want to check the file system types of different mounted drives. Knowing the file system type helps you understand how data is stored and managed on each drive.

🎯 Goal: Build a simple script that lists mounted drives and shows their file system types, then filters to show only drives with ext4 or xfs file systems.

📋 What You'll Learn

Create a variable with a sample list of mounted drives and their file system types.

Add a variable to specify which file system types to filter (ext4 and xfs).

Use a loop or comprehension to select only drives with the specified file system types.

Print the filtered list showing drive names and their file system types.

💡 Why This Matters

🌍 Real World

System administrators often need to check and manage file system types on servers to ensure compatibility and performance.

💼 Career

Knowing how to script file system checks helps in automating server maintenance and troubleshooting tasks.

1

Create a list of mounted drives with file system types

Create a variable called mounted_drives that is a list of dictionaries. Each dictionary should have keys drive and fs_type. Use these exact entries: {'drive': '/dev/sda1', 'fs_type': 'ext4'}, {'drive': '/dev/sdb1', 'fs_type': 'xfs'}, {'drive': '/dev/sdc1', 'fs_type': 'ntfs'}, {'drive': '/dev/sdd1', 'fs_type': 'ext4'}.

Linux CLI

# Create the list mounted_drives with the exact entries
# Your code here

Need a hint?

Use a list with dictionaries. Each dictionary has keys 'drive' and 'fs_type' with the exact values given.

2

Add a variable for file system types to filter

Create a variable called filter_fs_types that is a list containing the strings 'ext4' and 'xfs'.

Linux CLI

mounted_drives = [
    {'drive': '/dev/sda1', 'fs_type': 'ext4'},
    {'drive': '/dev/sdb1', 'fs_type': 'xfs'},
    {'drive': '/dev/sdc1', 'fs_type': 'ntfs'},
    {'drive': '/dev/sdd1', 'fs_type': 'ext4'}
]
# Create filter_fs_types list with 'ext4' and 'xfs'
# Your code here

Need a hint?

Make a list with the two file system types as strings.

3

Filter drives by file system types

Create a variable called filtered_drives that uses a list comprehension to select only dictionaries from mounted_drives where the fs_type is in filter_fs_types.

Linux CLI

mounted_drives = [
    {'drive': '/dev/sda1', 'fs_type': 'ext4'},
    {'drive': '/dev/sdb1', 'fs_type': 'xfs'},
    {'drive': '/dev/sdc1', 'fs_type': 'ntfs'},
    {'drive': '/dev/sdd1', 'fs_type': 'ext4'}
]
filter_fs_types = ['ext4', 'xfs']
# Use list comprehension to create filtered_drives
# Your code here

Need a hint?

Use a list comprehension with d for d in mounted_drives if d['fs_type'] in filter_fs_types.

4

Print the filtered drives

Use a for loop to print each drive and its file system type from filtered_drives in the format: Drive: [drive], File System: [fs_type].

Linux CLI

mounted_drives = [
    {'drive': '/dev/sda1', 'fs_type': 'ext4'},
    {'drive': '/dev/sdb1', 'fs_type': 'xfs'},
    {'drive': '/dev/sdc1', 'fs_type': 'ntfs'},
    {'drive': '/dev/sdd1', 'fs_type': 'ext4'}
]
filter_fs_types = ['ext4', 'xfs']
filtered_drives = [d for d in mounted_drives if d['fs_type'] in filter_fs_types]
# Print each drive and its file system type
# Your code here

Need a hint?

Use a for loop and an f-string to print each drive and its file system type exactly as shown.