ext2 is a file system used in many Linux operating systems. It was developed in the early 1990s and is known for its simplicity and reliability. ext2 supports large file sizes and can handle a significant number of files in a single directory, making it suitable for various applications. One of the key features of ext2 is its lack of journaling, which means it does not keep a log of changes. This can lead to faster performance in some scenarios, but it also increases the risk of data loss during unexpected shutdowns. Despite this, ext2 remains a popular choice for many users.