$ <span class="sh-fn">mv</span> bytecodeVm.c bytecode_vm.c
$ <span class="sh-fn">mv</span> fastLexer.c fast_lexer.c
$ <span class="sh-fn">mv</span> fastLexer.h fast_lexer.h
$ <span class="sh-fn">mv</span> slowParser.c slow_parser.c
$ <span class="sh-fn">mv</span> slowParser.h slow_parser.h