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Top Forums UNIX for Dummies Questions & Answers differentiate between a file and a device Post 302200708 by keith_hampson on Thursday 29th of May 2008 10:07:45 PM
Old 05-29-2008
well i have a operating systems module at uni and i noticed this question in an old exam paper and cant find an answer to it anywhere. i thought it might have something to do with the arguments that open the file/device maybe.
 

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PAPERINFO(3)						     Library Functions Manual						      PAPERINFO(3)

NAME
paperinfo, paperwithsize, paperfirst, paperlast, papernext, paperprev - return informations about a paper SYNOPSYS
#include <paper.h> const struct paper* paperinfo(const char* papername) const struct paper* paperwithsize(double psw, double psh) char* papername(const struct paper*) double paperpswidth(const struct paper*) double paperpsheigth(const struct paper*) const struct paper* paperfirst(void) const struct paper* papernext(const struct paper* pinfo) const struct paper* paperprev(const struct paper* pinfo) const struct paper* paperlast(void) DESCRIPTION
paperinfo() returns a pointer to a struct paper containing informations about the paper with name papername paperwithsize() looks for a paper whose width and height is psw and psh in PostScript points, and return a pointer to a struct paper corresponding to the paper found. papername() returns the name of a paper described by an opaque struct paper object paperpswidth() returns the width, in PostScript points, of a paper described by an opaque struct paper object paperpsheight() returns the height, in PostScript points, of a paper described by an opaque struct paper object paperfirst() and paperlast() return the first and last entries for papers. Iteration from one entry to the next or the previous one can be done with papernext() and paperprev() respectively. SEE ALSO
paperinit(3), paperdone(3) defaultpapername(3) papersize(5) 24 September 1996 PAPERINFO(3)
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