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#include <u.h>
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#include <libc.h>
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void
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main(int argc, char **argv)
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{
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	Dir d;
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	if(argc != 3){
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		fprint(2, "usage: trunc file size\n");
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		exits("usage");
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	}
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	nulldir(&d);
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	d.length = strtoull(argv[2], 0, 0);
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	if(dirwstat(argv[1], &d) < 0)
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		sysfatal("dirwstat: %r");
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	exits(0);
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}