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BSD 4.1

main(argc,argv)
	char *argv[];
{
char b[512], *p;
int f, c;
f = open(argv[1], 0);
if (f<0) return(1);
p = b + read(f, b, 512);
while (p>b)
	if ( (c= *--p) ==0 || (c&0200) ) return(1);
return(0);
}

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