convertquota – Convert an old quota file to the new format

The convertquota command is used to convert an old quota file to the new quota format. This command is useful when you upgrade your Linux system from an older version to a newer one, as the new quota format is different from the old one. The new quota format is more efficient and allows for more features than the old one.


The convertquota command is used to convert an old quota file to the new format. The command takes the path to the old quota file as an argument and creates a new quota file with the same name but with a .aquota extension. The new quota file is created in the same directory as the old quota file.

Here is an example of how to use the convertquota command:

$ convertquota /home/user/quota.user

This command will convert the old quota file located at /home/user/quota.user to the new format and create a new quota file named /home/user/quota.user.aquota.


The following table lists all available options for the convertquota command:

Option Description
-h Display help information about the command.
-V Display the version of the command.

Troubleshooting tips

If you encounter any issues while using the convertquota command, here are some troubleshooting tips:

  • Make sure you have the necessary permissions to access the old quota file and create the new one.
  • Check that the path to the old quota file is correct.
  • If you receive an error message stating that the new quota file already exists, you can either delete the old one or specify a different name for the new file using the -n option.


  • The convertquota command only works with the old quota format used in Linux kernels 2.2.x and earlier. If you are using a newer kernel, you do not need to use this command.
  • The new quota format supports features such as group quotas, project quotas, and file system quotas, which were not available in the old format.