remount my removable storage on my raspberry pi

remount-storage.sh

#!/usr/bin/env bash

set -e

# check if disk is attached
sda1_attached=false
sdb1_attached=false

if lsblk | grep -q "sda1"; then
	sda1_attached=true
fi

if lsblk | grep -q "sdb1"; then
	sdb1_attached=true
fi

if [[ "${sda1_attached}" == "true" ]] && [[ "${sdb1_attached}" == "true" ]]; then
	echo "ERROR: both sda1 and sdb1 are attached.. only 1 should be attached"
	exit 1
fi

if [[ "${sda1_attached}" == "false" ]] && [[ "${sdb1_attached}" == "false" ]]; then
	echo "ERROR: neither sda1 and sdb1 are attached.. check if drive is plugged in"
	exit 1
fi

disk_name="/dev/sda1"
if [[ "${sdb1_attached}" == "true" ]]; then
	disk_name="/dev/sdb1"
fi

echo "
sda1_attached=${sda1_attached}
sdb1_attached=${sdb1_attached}
disk_name=${disk_name}
"

# check if remount is needed
if mount | grep -q "${disk_name} on /mnt/usb1"; then
	echo "No remount is needed.."
	exit 0
fi

# umount and mount
sudo umount /mnt/usb1
sudo mount "${disk_name}" /mnt/usb1