adding rdiffbak

shell/rdiffbak.sh

@@ -0,0 +1,70 @@
+#!/usr/bin/env bash
+#
+# cron: 0 1 * * *  rdiffbak.sh &
+#
+# SPDX-License-Identifier: MIT
+
+# -------------
+# CONFIG
+# -------------
+
+MAILTO="me@example.com"
+MAILSUB="backup report"
+# name of the entry in ~/.mailrc
+MAILSRV="example"
+
+SRC="/home/foobar"
+DST="/data/foobar"
+LOG="/data/bkplog"
+MAXAGE="1M"
+
+RDIFF="/usr/bin/rdiff-backup"
+OPTIONS="--exclude-fifos --exclude-sockets --print-statistics"
+
+TIMESTAMP=$(date +%Y-%m-%d_%H%M)
+LOGFILE="${LOG}/${TIMESTAMP}_backup.log"
+
+mkdir -p "$LOG" || exit 1
+function mailme() {
+  # ~/.mailrc needs to be configured
+  if [[ -f "${LOGFILE}" ]]; then
+    echo " -- EOF -- " >> "${LOGFILE}"
+    # shellcheck disable=SC2002
+    cat "${LOGFILE}" | mail -A "$MAILSRV" -s "${MAILSUB}" ${MAILTO}
+  fi
+}
+
+# ---------------
+# BACKUP
+# ---------------
+
+echo " -- $TIMESTAMP -- " >> "${LOGFILE}"
+
+if [[ ! -d "$SRC" ]]; then
+  echo "$TIMESTAMP Invalid SRC, aborting... " >> "${LOGFILE}"
+  mailme
+  exit 1
+fi
+if [[ ! -d "$DST" ]]; then
+  echo "$TIMESTAMP Invalid DST, aborting... " >> "${LOGFILE}"
+  mailme
+  exit 1
+fi
+
+echo "Backup: $RDIFF $OPTIONS $SRC $DST" >> "${LOGFILE}"
+
+$RDIFF "$OPTIONS" "$SRC" "$DST" >> "${LOGFILE}"
+RDRES=$?
+
+# It went well, remove stuff older than MAXAGE
+if [[ $RDRES -eq 0 ]]; then
+  $RDIFF --force --remove-older-than "$MAXAGE" "$DST" >> "${LOGFILE}"
+else
+  echo "rdiff backup failed, exit: $RDRES" >> "${LOGFILE}"
+  mailme
+  exit 1
+fi
+
+find "${LOG}" -type f -mtime +30 -delete
+mailme
+exit 0