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Thanks to flatcap for optimizing this command.
This command takes advantage of the ext4 filesystem's resistance to fragmentation.
By using this command, files that were previously fragmented will be copied / deleted / pasted essentially giving the filesystem another chance at saving the file contiguously. ( unlike FAT / NTFS, the *nix filesystem always try to save a file without fragmenting it )
My command only effects the home directory and only those files with your R/W (read / write ) permissions.
There are two issues with this command:
1. it really won't help, it works, but linux doesn't suffer much (if any ) fragmentation and even fragmented files have fast I/O
2. it doesn't discriminate between fragmented and non-fragmented files, so a large ~/ directory with no fragments will take almost as long as an equally sized fragmented ~/ directory
The benefits i managed to work into the command:
1. it only defragments files under 16mb, because a large file with fragments isn't as noticeable as a small file that's fragmented, and copy/ delete/ paste of large files would take too long
2. it gives a nice countdown in the terminal so you know how far how much progress is being made and just like other defragmenters you can stop at any time ( use ctrl+c )
3. fast! i can defrag my ~/ directory in 11 seconds thanks to the ramdrive powering the command's temporary storage
1. its only an experiment, safe ( i've used it several times for testing ), but probably not very effective ( unless you somehow have a fragmentation problem on linux ). might be a placebo for recent windows converts looking for a defrag utility on linux and won't accept no for an answer
2. it's my first commandlinefu command
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