Merge pull request #69 from mackdata/master

Update README.md

1 files changed, 7 insertions, 1 deletions

diff --git a/README.md b/README.md
index 886724e..895ce1f 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ On OS X, it has a few disadvantages compared to Time Machine - in particular it
 	
 ## Exclude file
 
-An optional exclude file can be provided as a third parameter. It should be compatible with the `--exclude-from` parameter of rsync. See [this tutorial] (https://sites.google.com/site/rsync2u/home/rsync-tutorial/the-exclude-from-option) for more information.
+An optional exclude file can be provided as a third parameter. It should be compatible with the `--exclude-from` parameter of rsync. See [this tutorial](https://sites.google.com/site/rsync2u/home/rsync-tutorial/the-exclude-from-option) for more information.
 
 ## Rsync options
 
@@ -42,6 +42,12 @@ To display the rsync options that are used for backup, run `./rsync_tmbackup.sh
 
 	rsync_tmbackup --rsync-set-flags "--numeric-ids --links --hard-links --one-file-system --archive --no-perms --no-groups --itemize-changes" /src /dest
 
+## Lock file
+
+The use of a lock-file is recommended for larger backups. [Flock(1)](https://github.com/discoteq/flock) is an easy way to get lock files and can be installed with Homebrew. Please refer to its GitHub page for more details. To use flock with the script, see this example:
+
+	flock -n /tmp/rsync.lock sh -c 'sh rsync_tmbackup.sh /home /mnt/backup_drive'
+
 # Features
 
 * Each backup is on its own folder named after the current timestamp. Files can be copied and restored directly, without any intermediate tool.