how the operating system compiles c programs at the time of booting. Post: 302633119

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From Wikipedia (FYI):

LEARN ABOUT X11R4

drv

drv(1)                                                              Apple Inc.                                                              drv(1)

NAME

       drv - cups driver interface for ppd compiler files

SYNOPSIS

       drv list
       drv cat drv:///filename.drv/pcfilename

DESCRIPTION

       drv  lists  and compiles PPDC source files installed in the /usr/share/cups/drv and (on Mac OS X) /Library/Printers/PPDs/Contents/Resources
       directories on behalf of the scheduler, cupsd(8).

       The first form of the command lists all of the PPD files that can be produced by the driver information files in the two directories.

       The second form of the command compiles the requested PPD and sends it to the standard output.

SEE ALSO

       ppdc(1), ppdhtml(1), ppdi(1), ppdmerge(1), ppdpo(1), ppdcfile(5)
       http://localhost:631/help

COPYRIGHT

       Copyright 2008-2009 by Apple Inc.

9 March 2009                                                           CUPS                                                                 drv(1)