dumpe2fs

The "dumpe2fs" command line tool is a utility used in Linux operating systems. It is used to display detailed information about the ext2, ext3, and ext4 file systems. The tool allows users to extract important data about the file system, such as block counts, inode counts, and size information. Information about the file system's superblock, group descriptor blocks, and the inode table can also be obtained using dumpe2fs. Users can view various features of the filesystem, including the number of blocks used for specific purposes like the superblock backup and the block and inode bitmap. dumpe2fs provides details about the file system's journaling features, including the size of the journal, the journaling mode, and the location of the journal. In addition to the file system metadata, dumpe2fs can display information about the file system's UUID and label, and whether it is clean or needs to be checked. This tool is often used during system troubleshooting or analysis, helping users assess the health and integrity of a file system. It is important to note that dumpe2fs typically requires root or superuser privileges to access and retrieve information from the file system. Overall, dumpe2fs is a powerful command line tool that provides valuable insights into the inner workings of ext2, ext3, and ext4 file systems.