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Linux wipe disk4/1/2023 # scrub -p nnsa|dod|bsi|old|fastold|gutmann|random|random2 fileNameHere The scrub implements several different algorithms. For certain classes of data, organizations may be willing to do the next best thing which is scribble on all the bytes until retrieval would require heroic efforts in a lab. Although physical destruction is unarguably the most reliable method of destroying sensitive data, it is inconvenient and costly. It overwrites hard disks, files, and other devices with repeating patterns intended to make recovering data from these devices more difficult. You can use disk scrubbing program such as scrub. # wipe -D /path/to/file.doc How to use the scrub command You can use wipe command to delete any file including disks: # shred -v -random-source=/dev/urandom -n1 /dev/sda How to use the wipe command # shred -v -random-source=/dev/urandom -n1 /dev/DISK/TO/DELETE In this example use shred and /dev/urandom as the source of random data: The command is same for IDE hard disk hda (PC/Windows first hard disk connected to IDE) : -z : Add a final overwrite with zeros to hide shredding.-n 5: Overwrite 5 times instead of the default (25 times).Fig.01: Use shred to securely delete simple files including hard disks
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