Simple web file sharing script using SHA-256 hash as file name to avoid brute force attacks

share.sh

#!/bin/sh

if [ $# -lt 1 ]; then
        echo "Usage: $0 <filename>" >&2
        exit 1
fi

HASH=$(sha256sum $1 | cut -c -64)
EXT=$(echo "$1" | sed 's/^.*\.//')
scp "$1" remote_host:directory_available_from_web/$HASH.$EXT
echo http://domain.tld/$HASH.$EXT