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$ cat -n prime3.pl
   1  #!/usr/bin/perl -I../lib -w
...
   8
   9  @range_primes = primes(4, 9);
  10  print "@range_primes\n";

 $ time perl -MRemote::Use=config,rsyncconfig prime3.pl
  receiving file list ... done
...
  real    0m2.349s
  user    0m0.116s
  sys     0m0.060s

  $ time perl -MRemote::Use=config,rsyncconfig prime3.pl
  2 3 5 7
...
  real    0m0.066s
  user    0m0.056s
  sys     0m0.008s

$ cat rsyncconfig
package rsyncconfig;
...
}

1;