$ go run pipe.go -h

Usage of ....

  -path=".": path name

  -pattern=".go$": pattern

$ go run pipe.go -path=.. -pattern=.go$

     123 ../concurrent_pipe/pipe.go

      70 ../filter/filter.go

     140 ../mapreduce/mapreduce.go

     109 ../pipe/pipe.go

     107 ../pipeline/main.go

      90 ../sharedMap/sharedMap.go

      57 ../timeout/timeout.go

$ find .. | grep .go$ | xargs wc -l

     123 ../concurrent_pipe/pipe.go

      70 ../filter/filter.go

     140 ../mapreduce/mapreduce.go

     109 ../pipe/pipe.go

     107 ../pipeline/main.go

      90 ../sharedMap/sharedMap.go

      57 ../timeout/timeout.go

     696 total