Program is in the repos. .. just wondering whether there is any point in using it as not much fragmentation is associated with Linux. Also is it safe/reliable ? http://linux.die.net/man/8/shake http://vleu.net/shake/ "Before any use, check that your partition is mounted with user_xattr. If it is not, edit your fstab to add this option then call mount -o remount MY_PARTITION. Shake can works without them, but will be less efficient (it use xattr to store information helping incremental use." ??