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#include <u.h>
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#include <libc.h>
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void
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cat(int f, char *s)
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{
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	char buf[8192];
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	long n;
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	while((n=read(f, buf, (long)sizeof buf))>0)
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		if(write(1, buf, n)!=n)
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			sysfatal("write error copying %s: %r", s);
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	if(n < 0)
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		sysfatal("error reading %s: %r", s);
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}
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void
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main(int argc, char *argv[])
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{
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	int f, i;
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	argv0 = "cat";
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	if(argc == 1)
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		cat(0, "<stdin>");
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	else for(i=1; i<argc; i++){
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		f = open(argv[i], OREAD);
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		if(f < 0)
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			sysfatal("can't open %s: %r", argv[i]);
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		else{
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			cat(f, argv[i]);
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			close(f);
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		}
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	}
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	exits(0);
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}
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