rc file: /R-C fi:l/ n. [Unix: from `runcom files' on the CTSS
system 1962-63, via the startup script `/etc/rc'] Script file
containing startup instructions for an application program (or an
entire operating system), usually a text file containing commands of
the sort that might have been invoked manually once the system was
running but are to be executed automatically each time the system
starts up. See also dot file, profile (sense 1).