Difference between revisions of "Linux Secure Delete"

From Hack Sphere Labs Wiki
Jump to: navigation, search
(SCRIPTS)
 
Line 36: Line 36:
  
 
=SCRIPTS=
 
=SCRIPTS=
tail *
+
<pre>
 +
cat *
 +
#! /bin/bash
 +
#wtf
  
<pre>
+
if [ -z "$1" ]
==> dd.drivetest <==
+
        then
 +
                echo "Please specify a target:"
 +
                echo "/dev/sda"
 +
                echo "/anything/anything"
 +
                exit
 
         fi
 
         fi
  
Line 50: Line 57:
 
done
 
done
  
 +
#! /bin/bash
 +
#wtf
  
==> dd.erasedrive <==
+
if [ -z "$1" ]
 +
        then
 +
                echo "Please specify a target:"
 +
                echo "/dev/sda"
 +
                echo "/anything/anything"
 +
                exit
 
         fi
 
         fi
  
Line 62: Line 76:
 
done
 
done
  
 
==> dd.progress <==
 
 
#! /bin/bash
 
#! /bin/bash
 
while [ 1 ];
 
while [ 1 ];
Line 70: Line 82:
 
   sleep 5;
 
   sleep 5;
 
done
 
done
 +
 
</pre>
 
</pre>

Latest revision as of 03:41, 16 October 2014

sudo apt-get install secure-delete

This has four tools:

srm - securely delete an existing file
smem - securely delete traces of a file from ram
sfill - wipe all the space marked as empty on your hard drive
sswap - wipe all the data from you swap space.

Wipe Drive Erase

  • dd command
dd if=/dev/zero of=/dev/sdX iflag=nocache oflag=direct bs=4096
  • dd command repeat
while [ 1 ];
do 
  dd if=/dev/zero of=/dev/sdX iflag=nocache oflag=direct bs=4096
  sleep 5;
done
  • Progress of DD
while [ 1 ];
do 
  kill -USR1 $(pidof dd)
  sleep 5;
done


Notes

SCRIPTS

cat *
#! /bin/bash
#wtf

if [ -z "$1" ]
        then
                echo "Please specify a target:"
                echo "/dev/sda"
                echo "/anything/anything"
                exit
        fi

echo "Reading Entire Drive"

while [ 1 ];
do
  dd if=$1 of=/dev/zero bs=64M
  sleep 5;
done

#! /bin/bash
#wtf

if [ -z "$1" ]
        then
                echo "Please specify a target:"
                echo "/dev/sda"
                echo "/anything/anything"
                exit
        fi

echo "Writing Entire Drive"

while [ 1 ];
do
  dd if=/dev/zero of=$1 bs=64M
  sleep 5;
done

#! /bin/bash
while [ 1 ];
do 
  kill -USR1 $(pidof dd)
  sleep 5;
done