// SPDX-FileCopyrightText: 2022 Shun Sakai
//
// SPDX-License-Identifier: CC-BY-4.0

== EXIT STATUS

*0*::

  Successful program execution.

*1*::

  An error occurred.

*2*::

  An error occurred while parsing command-line arguments.

*65*::

  The input data was incorrect in some way.

*66*::

  An input file did not exist or was not readable.

*69*::

  A service is unavailable.

*71*::

  An operating system error has been detected.

*74*::

  An error occurred while doing I/O on some file.

*77*::

  You did not have sufficient permission to perform the operation.
