From 17baa237f992948214c552a3d74d313f5cfe79c1 Mon Sep 17 00:00:00 2001
From: Dennis <dennis@dennispotter.eu>
Date: Sun, 5 Apr 2020 15:43:32 +0200
Subject: [PATCH] Added rsync-backup.sh script and example config This script
 can be executed in a cronjob and to regularly backup certain predefined
 files. AFter backing up, the script will send an email to inform the admin
 about the backup.

---
 rsync-backup/rsync-backup.conf.example | 14 +++++
 rsync-backup/rsync-backup.sh           | 78 ++++++++++++++++++++++++++
 2 files changed, 92 insertions(+)
 create mode 100644 rsync-backup/rsync-backup.conf.example
 create mode 100755 rsync-backup/rsync-backup.sh

diff --git a/rsync-backup/rsync-backup.conf.example b/rsync-backup/rsync-backup.conf.example
new file mode 100644
index 0000000..46d3172
--- /dev/null
+++ b/rsync-backup/rsync-backup.conf.example
@@ -0,0 +1,14 @@
+#################################################################
+# Config
+#################################################################
+EMAIL='' # Send confirmation email to this address
+SSH_HOST='' # Target host
+SSH_USER='' # User on target host
+SSH_KEY='' # location of SSH key
+SSH_PORT='22'
+
+declare -a SRC_DIRS=(
+	#"/home"
+)
+
+DST_DIR=''
diff --git a/rsync-backup/rsync-backup.sh b/rsync-backup/rsync-backup.sh
new file mode 100755
index 0000000..341e7b5
--- /dev/null
+++ b/rsync-backup/rsync-backup.sh
@@ -0,0 +1,78 @@
+#!/bin/bash
+
+#################################################################
+# Check availability of software
+#################################################################
+function availability {
+    if [[ ! $(command -v $1) ]]; then
+        echo Error: '$1' is not available but required. Please install it!
+        exit 1
+    fi
+}
+
+availability mail
+availability rsync
+
+#################################################################
+# Get arguments
+#################################################################
+missingArg()
+{
+   echo "Error: Please define the configuration to be used!"
+   echo "       Usage: $0 -c <configuration_file>"
+   exit 1
+}
+
+while getopts "c:" opt
+do
+   case "$opt" in
+      c ) CONFIG_FILE="$OPTARG" ;;
+      ? ) missingArg ;; 
+   esac
+done
+
+# Check if config was empty
+if [ -z "$CONFIG_FILE" ]
+then
+   missingArg
+fi
+
+# Check if config file exists
+if [ ! -f $CONFIG_FILE ]
+then
+    echo "$CONFIG_FILE does not exist!"
+    exit 1
+fi
+
+source $CONFIG_FILE
+
+#################################################################
+# Loop through array and invoke rsync
+#################################################################
+date_styled=$(date -d "today" +"%Y%m%d_%H%M")
+
+for i in "${SRC_DIRS[@]}"
+do
+
+	echo "" >> /tmp/rsync_log_$date_styled
+	echo "======================================================" >> /tmp/rsync_log_$date_styled
+	echo "${i^^}" >> /tmp/rsync_log_$date_styled
+	echo "======================================================" >> /tmp/rsync_log_$date_styled
+
+	rsync -av --delete --rsh="ssh -p $SSH_PORT -i $SSH_KEY" $i $SSH_USER@$SSH_HOST:$DST_DIR >> /tmp/rsync_log_$date_styled
+done
+
+
+#################################################################
+# Send email with information and hashes
+#################################################################
+sed -i '1s/^/Hey there!\n\nI created a new backup. See the log below.\n/' /tmp/rsync_log_$date_styled
+
+mail -s "Backup created ($date_styled)" $EMAIL < /tmp/rsync_log_$date_styled
+
+#################################################################
+# Delete log
+#################################################################
+rm -f /tmp/rsync_log_$date_styled
+
+exit 0