The graphical management interface for cOS Core is available in a number of different languages. The language is selected from a dropbox when the interface is opened.

The selected language displayed in the graphical interface is read by cOS Core from one of a set of separate language files which reside in the non-volatile memory of the firewall. These files can be displayed and managed using the CLI languagefiles command and all of them have the filetype .RC.

To see all the available language files, use the command with no options:

Device:/> languagefiles
Language files
      LNG-CH.RC  -->  "Chinese"

The output shows that only the Chinese language file is present.

To delete a language file, use the -remove option:

Device:/> languagefiles -remove=LNG-CH.RC
Removing "LNG-CH.RC" ...OK

If there are no language files present, the following output is seen:

Device:/> languagefiles
Language files
  No language files found

The default language of English is hard-coded into cOS Core and does not appear as a file in the list.