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June 19, 2020 10:32
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Write zeros over all of the free space on your disk. Afterwards, remove a small file before removing the big file to help the system be more responsive in the meantime.
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| #!/bin/sh | |
| dd if=/dev/zero of=$HOME/zero.small.file iflag=nocache oflag=direct bs=1024 count=102400 | |
| dd if=/dev/zero of=$HOME/zero.file iflag=nocache oflag=direct bs=4096 | |
| rm $HOME/zero.small.file | |
| rm $HOME/zero.file |
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