blkid

blkid is a command line tool used in Linux to extract information about block devices. It provides detailed information about various attributes of storage devices, such as their UUID, type, file system type, and label. By scanning devices and partitions, blkid can determine the unique identifier (UUID) for each block device and determine their respective types. This tool is useful for identifying and managing devices, especially when configuring or troubleshooting the boot process. It can be used to detect and list attributes of hard drives, solid-state drives (SSDs), USB drives, and even virtual disk images. blkid also provides information about the file system present on a block device, such as ext4, NTFS, FAT, or others. It supports multiple output formats, including human-readable and machine-friendly formats like JSON. The tool can be used by system administrators to verify the integrity of storage devices or mount specific file systems based on their attributes. blkid is often used in conjunction with other commands like mount, fdisk, and grep for more advanced disk-related operations. Overall, blkid is an essential tool for managing storage devices and gaining insights into their attributes within a Linux system.