#include <9pm/u.h> #include <9pm/libc.h> void main(int argc, char *argv[]) { int i; Dir dir; char *user, *errs; ARGBEGIN{ }ARGEND if(argc < 1){ fprint(2, "usage: chown owner file ....\n"); exits("usage"); } user = argv[0]; errs = 0; for(i=1; i