Add remote-backup.sh. Minor fixes

scripts/remote-backup.sh

@@ -0,0 +1,89 @@
+#!/usr/bin/env bash
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# IMPORTANT:
+# Run the install-little-backup-box.sh script first
+# to install the required packages and configure the system.
+
+# Create a new configuraion file if it doesn't exist
+# and prompt for required values
+
+CONFIG_DIR=$(dirname "$0")
+CONFIG="${CONFIG_DIR}/remote-backup.cfg"
+
+if [ ! -f "$CONFIG" ]; then
+    echo "Enter remote user name and press [ENTER]:"
+    read USER
+    echo 'USER="'$USER'"' >> "$CONFIG"
+    echo "Enter remote server IP address or domain name and press [ENTER]:"
+    read REMOTE
+    echo 'REMOTE="'$REMOTE'"' >> "$CONFIG"
+    echo "Specify target backup directory (include the trailing slash) and press [ENTER]"
+    read BACKUP_DIR
+    echo 'BACKUP_DIR="'$BACKUP_DIR'"' >> "$CONFIG"
+    echo "Enter your Notify token and press [ENTER]."
+    echo "Skip to disable:"
+    read NOTIFY_TOKEN
+    echo 'NOTIFY_TOKEN="'$NOTIFY_TOKEN'"' >> "$CONFIG"
+    fi
+# Initialize the configuration file
+source "$CONFIG"
+
+# Specify backup device and its mount points,
+# and other settings
+STORAGE_DEV="sda1" # Name of the storage device
+STORAGE_MOUNT_POINT="/media/storage" # Mount point of the storage device
+SHUTD="5" # Minutes to wait before shutdown due to inactivity
+
+# Set the ACT LED to heartbeat
+sudo sh -c "echo heartbeat > /sys/class/leds/led0/trigger"
+
+# Shutdown after a specified period of time (in minutes) if no device is connected.
+sudo shutdown -h $SHUTD "Shutdown is activated. To cancel: sudo shutdown -c"
+
+# Wait for a USB storage device (e.g., a USB flash drive)
+STORAGE=$(ls /dev/* | grep $STORAGE_DEV | cut -d"/" -f3)
+while [ -z ${STORAGE} ]
+  do
+  sleep 1
+  STORAGE=$(ls /dev/* | grep $STORAGE_DEV | cut -d"/" -f3)
+done
+
+# When the USB storage device is detected, mount it
+mount /dev/"$STORAGE_DEV" "$STORAGE_MOUNT_POINT"
+
+# Cancel shutdown
+sudo shutdown -c
+
+# Set the ACT LED to blink at 1000ms to indicate that the storage device has been mounted
+sudo sh -c "echo timer > /sys/class/leds/led0/trigger"
+sudo sh -c "echo 1000 > /sys/class/leds/led0/delay_on"
+
+# Perform backup using rsync
+rsync -avhz -e ssh --delete --progress "$STORAGE_MOUNT_POINT" "$USER"@"$REMOTE":"$BACKUP_DIR"
+
+if [ ! -z "$NOTIFY_TOKEN" ]; then
+	TEXT=$(sed 's/ /%20/g' <<< "Remote backup completed.")
+	curl -k \
+"https://us-central1-notify-b7652.cloudfunctions.net/sendNotification?to=${NOTIFY_TOKEN}&text=${TEXT}" \
+> /dev/null
+fi
+
+  # Turn off the ACT LED to indicate that the backup is completed
+  sudo sh -c "echo 0 > /sys/class/leds/led0/brightness"
+
+# Shutdown
+sync
+shutdown -h now