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Scripts: Add help message to erase-disk.sh

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the_4n0nym0u53 2022-02-24 19:36:22 +01:00
parent 332473358f
commit 7dd2d85547
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3 changed files with 39 additions and 5 deletions
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36
scripts/.local/bin/erase-disk.sh
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@ -2,8 +2,42 @@
# USAGE: erase-disk.sh <passes> <device> # USAGE: erase-disk.sh <passes> <device>
# Must be run as root # Must be run as root
echo "# Securely erasing the disk device $2" usage() {
echo "Usage: erase-disk.sh PASSES DEVICE"
echo "Securely erase DEVICE with PASSES passes"
echo
echo "Flags:"
echo " -h, --help \tDisplay this help message"
echo
echo "Options:"
echo " DEVICE \tThe device to erase"
echo " PASSES \tHow many times to erase DEVICE"
echo
echo "This script will securely erase a disk device with the specified amount"
echo "of passes (rounds). It does so by overwriting the specified device with"
echo "random data on the first pass, and with zeroes on the other passes."
echo "Due to the nature of disk device access permissions, the script must"
echo "be run as root."
echo
echo "erase-disk.sh is licensed under The Unlicense."
exit 0
}
[ "$1" = "-h" -o "$1" = "--help" ] && usage
if [ $(id -u) -ne 0 ]; then
echo "This script must be run as root. Quitting..."
exit 1
elif [ -z "$1" ]; then
echo "Please specify number of passes. Quitting..."
exit 1
elif [ -z "$2" ]; then
echo "Please specify device to erase. Quitting..."
exit 1
fi
echo "# Securely erasing the disk device $2"
i=1 i=1
while [ $i -le $1 ]; do while [ $i -le $1 ]; do