How to Check Inode Usage on Linux Using df -i

Understanding Inodes on Linux

• 💡 Inodes are fundamental structures on a Linux file system that store information about each file and directory.

Using the df -i Command

• 💻 To check inode usage, open the terminal and execute the command df -i.
• 📊 The output displays six key columns: Filesystem, Inodes, IUsed, IFree, IUse%, and Mounted on.

Decoding df -i Output

• 📌 Filesystem identifies the name of the file system (e.g., tmpfs, /dev/sda2).
• 🔑 Inodes represents the total number of inodes available on that file system.
• 📈 IUsed shows the number of inodes currently in use.
• 🆓 IFree indicates the number of inodes that are available.
• 💯 IUse% displays the percentage of inodes that are currently being used.
• 📍 Mounted on shows the mount point where the file system is attached.

Checking Specific Filesystem Inode Usage

• 🎯 To check inode usage for a specific mount point, such as /home, append the directory to the command: df -i /home.
• 🔍 This allows for a focused view of inode consumption on particular partitions or directories.