/usr/share/vim/vim80/ftplugin/systemverilog.vim is in vim-runtime 2:8.0.1453-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 | " Vim filetype plugin file
" Language: SystemVerilog
" Maintainer: kocha <kocha.lsifrontend@gmail.com>
" Last Change: 12-Aug-2013.
if exists("b:did_ftplugin")
finish
endif
" Behaves just like Verilog
runtime! ftplugin/verilog.vim
|