xv6/echo.c

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#include "types.h"
#include "stat.h"
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#include "user.h"
int
main(int argc, char *argv[])
{
int i;
for(i = 1; i < argc; i++)
printf(1, "%s%s", argv[i], i+1 < argc ? " " : "\n");
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exit();
}