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On this page you find all important commands for the CLI tool sync. If the command you are looking for is missing please ask our AI.


Sync is a command line tool that is commonly used in Unix-based operating systems. It is used to synchronize the data between two directories or file systems. This tool ensures that the content of the source directory matches the content of the target directory.

Sync is mainly used for backups, mirroring, and updating files. It allows users to keep their data consistent across different locations. It can be especially useful when transferring files from one machine to another over a network.

Sync works by comparing the attributes of files in the source and target directories, such as their timestamps and sizes. It then updates or copies files from the source to the target directory to make them identical.

The sync command can be run with various options to control its behavior. Some commonly used options include -r (recursively syncs directories), -u (skips files that are newer in the target directory), and -v (displays verbose output).

Sync is efficient and fast, as it only transfers the changes between the source and target directories. This helps save time and bandwidth when syncing large amounts of data.

It is important to note that sync is a powerful tool and can potentially overwrite or delete data if not used cautiously. Therefore, it is recommended to carefully review the options and thoroughly understand its behavior before using it.

While sync is available on Unix-based systems, similar functionality can be achieved on Windows using tools like Robocopy or SyncToy.

Overall, sync is a versatile and essential command line tool that helps maintain data consistency and synchronization between directories or file systems, making it an essential tool for system administrators and users managing large amounts of data.

List of commands for sync:

  • sync:tldr:63ad9 sync: Flush all pending write operations on all disks.
    $ sync
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  • sync:tldr:e830a sync: Flush all pending write operations on a single file to disk.
    $ sync ${filename}
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tool overview