Linux puskom-ProLiant-DL385-Gen10 5.4.0-150-generic #167~18.04.1-Ubuntu SMP Wed May 24 00:51:42 UTC 2023 x86_64

//usr/share/mime/application/x-wonderswan-rom.xml

 <?xml version="1.0" encoding="utf-8"?>
<mime-type xmlns="http://www.freedesktop.org/standards/shared-mime-info" type="application/x-wonderswan-rom">
  <!--Created automatically by update-mime-database. DO NOT EDIT!-->
  <comment>Bandai WonderSwan ROM</comment>
  <generic-icon name="application-x-executable"/>
  <glob pattern="*.ws"/>
</mime-type>