RootForum Community

Code: Select all

shred -u DATEINAME

Code: Select all

#!/bin/sh
# Parameter $1 ist das zu löschende Gerät
BLOCKSIZE=8192
echo -e "Zu löschendes Gerät: $1/nBlockgröße beim Schreiben: $BLOCKSIZE"
echo "[`date +"%a %T"`] Durchgang 1"
   dd if=/dev/zero of=%1 bs=$BLOCKSIZE
echo "[`date +"%a %T"`] Durchgang 2"
   dd if=/dev/urandom of=%1 bs=$BLOCKSIZE
echo "[`date +"%a %T"`] Durchgang 3"
   dd if=/dev/zero of=%1 bs=$BLOCKSIZE
echo "[`date +"%a %T"`] $1 gelöscht"

Code: Select all

chattr +s file

Code: Select all

When  a file with the `s' attribute set is deleted, its blocks are zeroed and written back
       to the disk.

       When a file with the `S' attribute set is modified, the changes are written  synchronously
       on  the  disk;  this  is  equivalent to the `sync' mount option applied to a subset of the
       files.

Code: Select all

#!/bin/sh

for i in `df -m -t ext2 -t ext3 -P | grep "/dev/" | awk  '{print $4":"$6}'`; do


    free=`echo -n $i | awk -F: '{print $1}'`
    root=`echo -n $i | awk -F: '{print $2}'`

    let ssize=$free-50
    echo "Shred $ssize Mb of $free Mb on $root"

    if [ $root == '/' ]; then
        root="";
    fi

    dd if=/dev/urandom of=$root/shred.dd bs=1048576 count=$ssize

    shred -u -v -z $root/shred.dd

done