Secure Wipe on OMV (and Debian Linux)

I wanted to use the command line to Secure Wipe a hard drive in OpenMediaVault, based on Debian Linux. I used the built in shred command, details are available at the link below:

For example, I like to use the following combination (based on the device number found under Storage->Disks in the GUI):

 shred -vfz /dev/sdX

Verbose, force permissions and a final write of zeros (total 4 passes). This is in contrast to the OMW default, which is a single pass:

shred -v -n 1 /dev/sdX
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