#!/usr/bin/env bash

for old in *\?*; do
    [[ -f "$old" ]] || continue

    extension="${old##*.}"
    new="${old%%\?*}.${extension}"

    if [[ -e "$new" ]]; then
        printf 'Skipping existing destination: %q\n' "$new" >&2
        continue
    fi

    sudo mv -- "$old" "$new"
done