scan for what?
And disk management tools, well, there are alot of them.depending on what you mean. cfdisk and fdisk do partitioning, hdparm can adjust hdd parameters, and there are hundreds of other programs concerning harddisks.
My point is, please be more specific. Tell us what you need to do to a disk, and we can tell you what you should be looking for.
If youre referring to a scandisk-like solution, then you need not look any further. The most popular filesystems on Linux systems (ext3, ReiserFS, etc) dont need any defragmentation like FAT32 partitions need. Aanyways,
might also reveal something youre after.
And lastly, if you seek to recover a deleted file, youre out of luck if you use any other filesystem than ext2. On ext2 it is possible, but only rarely, and only about immediately after deleting the file.