shred

Overwrite files to securely delete data. More information: https://www.gnu.org/software/coreutils/manual/html_node/shred-invocation.html.

• Overwrite a file:

shred path/to/file

• Overwrite a file and show progress on the screen:

shred --verbose path/to/file

• Overwrite a file, leaving [z]eros instead of random data:

shred --zero path/to/file

• Overwrite a file a specific [n]umber of times:

shred --iterations 25 path/to/file

• Overwrite a file and remove it:

shred --remove path/to/file

• Overwrite a file 100 times, add a final overwrite with [z]eros, remove the file after overwriting it and show [v]erbose progress on the screen:

shred -vzun 100 path/to/file