Does one defragment Linux partitions?

[CrowbarOfDeath]

The questions pretty much says it all. If the answer is yes, then where would I find a program to do this?

[Unruly]

due to the way linux handles files and such, there is little need to do a defragmentation for a VERY long time. However, I do know there is a defragmentation program in development, currently it has a tendancy to destory data...

:) welcome to the wild world of no windows... :)

now, you have 2 hours back to play with linux

[Malakin]

Whether there's a defrag program depends on what filesystem you're using. ext2 has a program called defrag, but if you're using reiser there isn't one yet (afaik). XFS and JFS may have one since they've been around for a while but I'm not sure.