The GNU time utility runs another program, collects information about the resources used by that program while it is running and displays the results. Time can help developers optimize their programs. The resources that `time' can report on fall into the general categories of time, memory, I/O, and IPC calls. The GNU version can format the output in arbitrary ways by using a printf-style format string to include various resource measurements. The e2fsprogs package contains a number of utilities for creating, checking, modifying and correcting any inconsistencies in second extended (ext2) filesystems. E2fsprogs contains e2fsck (used to repair filesystem inconsistencies after an unclean shutdown), mke2fs (used to initialize a partition to contain an empty ext2 filesystem), debugfs (used to examine the internal structure of a filesystem, to manually repair a corrupted filesystem or to create test cases for e2fsck), tune2fs (used to modify filesystem parameters) and most of the other core ext2fs filesystem utilities. You should install the e2fsprogs package if you need to manage the performance of an ext2 filesystem.