fix: correct shellcheck issues

backup.sh

@@ -41,7 +41,7 @@ run_backup () {
 #Do the backup
 	${ECHO} "Starting backup on $HOST at $STARTTIME"
 	${RESTIC} backup \
-		--tag $BACKUP_TAG \
+		--tag "$BACKUP_TAG" \
 		--exclude-file $BACKUP_EXCLUDES \
 		$BACKUP_PATHS
 	return $?
@@ -51,7 +51,7 @@ run_forget (){
 	# Remove old Backups
 	${ECHO} "Removing old backups per retention settings"
 	${RESTIC} forget \
-		--tag $BACKUP_TAG \
+		--tag "$BACKUP_TAG" \
 		--prune \
 		--keep-daily $RETENTION_DAYS \
 		--keep-weekly $RETENTION_WEEKS \
@@ -72,7 +72,7 @@ cleanup () {
 	${ECHO} "Removing lockfile"
 	${RESTIC} unlock
 	${ECHO} "Removing logs ($LOG_DIR/$LOG_BASE-*) older than $LOG_KEEP days"
-	${FIND} $LOG_DIR -name $LOG_BASE-* -mtime +$LOG_KEEP
+	${FIND} "$LOG_DIR" -name "$LOG_BASE-*" -mtime +$LOG_KEEP
 }
 
 send_matrix () {
@@ -88,7 +88,7 @@ notify () {
 	# echo "text to send" | notify
 	local message=$1
 	if [ -z "$message" ]; then
-		read message
+		read -r message
 	fi
 	
 	# call whatever notification script/function you wish with "$message" as the part you want to show
@@ -102,7 +102,7 @@ if run_backup && restic unlock && run_forget && cleanup; then
 	ENDTIME=$(date "+%Y-%m-%d %H:%M:%S")
 #status_total=$(( check_status + backup_status + forget_status ))
 #if (( status_total == 0 ));then
-	${ECHO} "Backup on $HOST completed successfully at $ENDTIME" | ${TEE} -a $LOG_FILE >(notify)
+	${ECHO} "Backup on $HOST completed successfully at $ENDTIME" | ${TEE} -a "$LOG_FILE" >(notify)
 else
-	${ECHO} "Backup on $HOST completed at $ENDTIME with issues (see $LOG_FILE)" | ${TEE} -a $LOG_FILE >(notify)
+	${ECHO} "Backup on $HOST completed at $ENDTIME with issues (see $LOG_FILE)" | ${TEE} -a "$LOG_FILE" >(notify)
 fi