sync command in Linux with Examples

sync command in Linux is used to synchronize cached writes to persistent storage. If one or more files are specified, sync only them, or their containing file systems.


sync [OPTION] [FILE]...

Note: Nothing is being shown in the screenshots just because sync command makes the cache in the background.

Example: It will be going to sync all cached file data that belongs to the current user.


  • sync -d: This option sync only file data, no unneeded metadata.


    sync -d /home/algoscale/Desktop/aricleslist.txt /home/algoscale/Desktop/addvance.html

  • sync -f: This option will sync the file systems which contains the files.


    sync -f /home/algoscale/Desktop/aricleslist.txt

  • sync –help: This option display the help text and exit.
    sync --help

  • sync –version: This option will output version information and exit.
    sync --version

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