LSync

LSync is an open source tool for synchronizing files and directories between two locations over the network. It is similar to Rsync in that it can efficiently transfer only the changes between files, making it a useful tool for backup and synchronization tasks.

Here are some key features and benefits of LSync:

1. Efficient synchronization: LSync uses the same efficient file transfer algorithm as Rsync, allowing it to transfer only the parts of a file that have changed and minimizing the amount of data that needs to be transferred.

2. Cross-platform compatibility: LSync is available on most Unix-based systems, including Linux and macOS, and can be used to synchronize files between machines running different operating systems.

3. Secure data transfer: LSync supports encrypted data transfer using SSH, providing a secure way to transfer data over the network.

4. Preserves file attributes: LSync can preserve file permissions, ownership, and timestamps during the synchronization process, ensuring that the transferred files retain their original attributes.

5. Flexible synchronization options: LSync can be configured to perform full, incremental, and differential synchronizations, making it a versatile tool that can meet a range of synchronization requirements.

6. Scalability: LSync can be used to synchronize large amounts of data between multiple machines, making it suitable for enterprise-level synchronization tasks.


Overall, LSync is a powerful and flexible tool for synchronizing files and directories between two locations. Its efficient file transfer algorithm, cross-platform compatibility, and secure data transfer options make it a popular alternative to Rsync for backup and synchronization tasks.

Sure! Here's an example of using LSync to synchronize a directory between two machines:

1. Install LSync: First, you'll need to install LSync on both the source and destination machines. On Ubuntu, you can do this by running the following command:

```

sudo apt-get install lsyncd

```

2. Create a configuration file: Next, you'll need to create a configuration file for LSync. Here's an example configuration file that synchronizes the /var/www directory from the source machine to the destination machine:

```

settings {

  logfile = "/var/log/lsyncd.log",

  statusFile = "/var/run/lsyncd.status"

}


sync {

  default.rsyncssh,

  source="/var/www",

  host="destination.example.com",

  targetdir="/var/www",

  excludeFrom="/etc/lsyncd.exclude",

  rsync = {

    compress = true,

    archive = true,

    verbose = true

  },

  ssh = {

    port = 22,

    identityFile = "/root/.ssh/id_rsa",

    user = "username"

  }

}

```

This configuration file specifies that LSync should use the rsyncssh protocol to synchronize the /var/www directory from the source machine to the destination machine. It also specifies that certain files and directories should be excluded from the synchronization process.

3. Start LSync: Once you've created the configuration file, you can start LSync by running the following command:

```

sudo lsyncd /path/to/lsyncd.conf

```

LSync will then synchronize the specified directory between the two machines according to the rules specified in the configuration file. Any changes made to the source directory will be automatically synchronized to the destination directory in near real-time.

More About : RSync and LSync