15 Jun 2014

Delete huge dir

rsync --delete-before -a -H /tmp/EMPTY/ TODELETE/

perl -e 'for(<*>){((stat)[9]<(unlink))}'

Secure delete

shred -vfuz -n 10 file
shred –verbose –random-source=/dev/urandom -n 1 /dev/sda

scrub -p dod /dev/sda
scrub -p dod -r file

badblocks -s -w -t random -v /dev/sda
badblocks -c 10240 -s -w -t random -v /dev/sda

srm -vz /tmp/file
sfill -vz /local
sdmem -v
swapoff /dev/sda5 && sswap -vz /dev/sda5