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 f
ile containing commands of the sort that might have been invoked manually once the system was running but are to be exec
uted automatically each time the system starts up. See also dot file, profile (sense 1).  http://www.tuxedo.org/~esr/jar
gon/html/entry/rc-file.html 참고 The New Hacker's Dictionary   : /etc/rc.d 라는 디렉토리 있잖아요..
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: 그런데 rc가 무슨 약자에요?
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: 너무 궁금해서 잠 못자겠어요...
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: 고수님들 가르쳐 주세요..
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: 그럼 미리 감사드립니다.