mirror of
https://github.com/sunknudsen/privacy-guides.git
synced 2025-02-23 09:13:56 +00:00
71 lines
1.3 KiB
Bash
Executable File
71 lines
1.3 KiB
Bash
Executable File
#! /bin/bash
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rounds=3
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positional=()
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while [[ $# -gt 0 ]]; do
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argument="$1"
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case $argument in
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-h|--help)
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printf "%s\n" \
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"Usage: secure-erase.sh [options]" \
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"" \
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"Options:" \
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" --rounds <rounds> overwrite n times (defauls to 3)" \
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" --zero overwrite with zeros obfuscating secure erase" \
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" -h, --help display help for command"
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exit 0
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;;
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--rounds)
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rounds=$2
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shift
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shift
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;;
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--zero)
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zero=true
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shift
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;;
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*)
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positional+=("$1")
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shift
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;;
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esac
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done
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set -- "${positional[@]}"
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red=$(tput setaf 1)
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normal=$(tput sgr0)
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dev="/dev/sda1"
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tput reset
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waitForUsbThumbDrive () {
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if [ ! -e $dev ]; then
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printf "Insert USB flash drive and press enter"
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read -r confirmation
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waitForUsbThumbDrive
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fi
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}
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waitForUsbThumbDrive
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printf "$red%s$normal\n" "Secure erase USB flash drive? (y or n)? "
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read -r answer
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if [ "$answer" = "y" ]; then
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for round in $(seq 1 1 $rounds); do
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printf "%s\n" "Overwriting with random data… (round $round of $rounds)"
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sudo dd bs=1M if=/dev/urandom of=$dev
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done
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if [ "$zero" = true ]; then
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printf "%s\n" "Overwriting with zeros…"
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sudo dd bs=1M if=/dev/zero of=$dev
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fi
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else
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exit 0
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fi
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printf "%s\n" "Done"
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