/*-
?*?Copyright?（c）?1991?1993
?*	The?Regents?of?the?University?of?California.??All?rights?reserved.
?*
?*?Redistribution?and?use?in?source?and?binary?forms?with?or?without
?*?modification?are?permitted?provided?that?the?following?conditions
?*?are?met:
?*?1.?Redistributions?of?source?code?must?retain?the?above?copyright
?*????notice?this?list?of?conditions?and?the?following?disclaimer.
?*?2.?Redistributions?in?binary?form?must?reproduce?the?above?copyright
?*????notice?this?list?of?conditions?and?the?following?disclaimer?in?the
?*????documentation?and/or?other?materials?provided?with?the?distribution.
?*?3.?All?advertising?materials?mentioning?features?or?use?of?this?software
?*????must?display?the?following?acknowledgement:
?*	This?product?includes?software?developed?by?the?University?of
?*	California?Berkeley?and?its?contributors.
?*?4.?Neither?the?name?of?the?University?nor?the?names?of?its?contributors
?*????may?be?used?to?endorse?or?promote?products?derived?from?this?software
?*????without?specific?prior?written?permission.
?*
?*?THIS?SOFTWARE?IS?PROVIDED?BY?THE?REGENTS?AND?CONTRIBUTORS?‘‘AS?IS‘‘?AND
?*?ANY?EXPRESS?OR?IMPLIED?WARRANTIES?INCLUDING?BUT?NOT?LIMITED?TO?THE
?*?IMPLIED?WARRANTIES?OF?MERCHANTABILITY?AND?FITNESS?FOR?A?PARTICULAR?PURPOSE
?*?ARE?DISCLAIMED.??IN?NO?EVENT?SHALL?THE?REGENTS?OR?CONTRIBUTORS?BE?LIABLE
?*?FOR?ANY?DIRECT?INDIRECT?INCIDENTAL?SPECIAL?EXEMPLARY?OR?CONSEQUENTIAL
?*?DAMAGES?（INCLUDING?BUT?NOT?LIMITED?TO?PROCUREMENT?OF?SUBSTITUTE?GOODS
?*?OR?SERVICES;?LOSS?OF?USE?DATA?OR?PROFITS;?OR?BUSINESS?INTERRUPTION）
?*?HOWEVER?CAUSED?AND?ON?ANY?THEORY?OF?LIABILITY?WHETHER?IN?CONTRACT?STRICT
?*?LIABILITY?OR?TORT?（INCLUDING?NEGLIGENCE?OR?OTHERWISE）?ARISING?IN?ANY?WAY
?*?OUT?OF?THE?USE?OF?THIS?SOFTWARE?EVEN?IF?ADVISED?OF?THE?POSSIBILITY?OF
?*?SUCH?DAMAGE.
?*
?*	@（#）cat.c	8.1?（Berkeley）?6/11/93
?*/

int?eval;

main（argc?argv）
	int?argc;
	char?**argv;
{
	register?int?fd?nr;
	char?buf[2048];

	if?（*++argv?&&?**argv?==?‘-‘）?{
		err（“no?options?available“?0）;
		_exit（1）;
	}
	for?（eval?=?0;?*argv;?++argv）
		if?（（fd?=?open（*argv?0?0））?			err（*argv?1）;
		else?{
			while?（（nr?=?read（fd?buf?sizeof（buf）））?>?0）
				if?（write（1?buf?nr）?!=?nr）?{
					err（*argv?1）;
					break;
				}
			if?（nr?==?-1）
				err（*argv?1）;
		}
	_exit（eval）;
}

#define	PROGNAME	“cat:?“
#include?“errfunction“