Short version of https://github.com/chankruze/gdrivedl

google-drive-downloader.sh

#!/usr/bin/env bash

set -euo pipefail

if ! [[ $# == 2 ]]
then
  echo "$0 FILE_ID SAVE_PATH" >&2
  exit 1
fi

if ! command -v wget &>/dev/null
then
  echo "Error: Install wget" >&2
  exit 1
fi

file_id="$1"
save_path="$2"

if [[ -z "$file_id" ]]
then
  echo "Error: Invalid FILE_ID -- '${file_id}'" >&2
  echo "seems to be empty, aight?" >&2
  exit 1
fi

if ! [[ -e "$save_path" ]]
then
  :
elif [[ -f "$save_path" ]]
then
  echo "File already exists. Overwrite?([y]:n)" >&2
  read yn
  if [[ "$yn" =~ ^n ]]
  then
    exit 0
  fi
else
  echo "Error: Invalid SAVE_PATH -- '${save_path}'" >&2
  exit 1
fi

u="https://docs.google.com/uc?export=download&id=${file_id}"
cs="$(
  wget \
    --quiet \
    --keep-session-cookies \
    --no-check-certificate \
    --save-cookies /tmp/cookies.txt "$u" -O- |
  sed -rn 's/.*confirm=([0-9A-Za-z_]+).*/\1\n/p'
)"
wget --load-cookies /tmp/cookies.txt "${u}&confirm=${cs}" -O "$save_path"

echo "[DONE]"