Tarball to standard output and then to rclone (rclone-to-gdrive.sh)

rclone-to-gdrive.sh

#!/bin/bash

# file: rclone-to-gdrive.sh
# usage: $(rclone-to-gdrive.sh /var/www /etc/nginx /var/some\ dir\ with\ spaces)

set -e

# Check if user running the script is root
# https://askubuntu.com/questions/15853/how-can-a-script-check-if-its-being-run-as-root
if [[ $EUID -ne 0 ]]; then
    printf "The script must be run by the 'root' user!\n"
    exit 1
fi

paths=("$@")
paths_friendly=""

printf "Checking for path existence:\n"
for path in "${paths[@]}"; do
   [[ ! -e $path ]] && printf "Path '${path} does not exist. Exiting!\n" && exit 1

   paths_friendly+="\"${path}\", "

   printf "\t'${path}' exists.\n"
done

[[ -z $paths ]] && printf "Specify directories to back up!\n" && exit 1

year=$(date +%Y)
month=$(date +%m)
month_friendly=$(date +%b)
day=$(date +%d)
hours_minutes_seconds=$(date +%H.%M.%S)

save_path="/${year}/${month_friendly}/backup-${year}-${month}-${day}-${hours_minutes_seconds}.tar.gz"

tar -zcpvf - "${paths[@]}"| rclone rcat gdrive:$save_path

printf "Backup succeeded (Output dir: $save_path) for $paths_friendly\n"