[root@fd2b210afdd6 ~]# ls
gobin goc2p golib goproject
[root@fd2b210afdd6 ~]# cd goc2p/src/helper/ds
[root@fd2b210afdd6 ~]# ls
showds.go
[root@fd2b210afdd6 ds]# go run showds.go
/root/goc2p/src/helper/ds:
showds.go
[root@fd2b210afdd6 ds]# ds
/root/goc2p/src/helper/ds:
showds.go
[root@fd2b210afdd6 ds]# go run showds.go -p /goc2 p/src/helper/
/root/goc2p/src/helper/
    pds/
        showpds.go
    ds/
        showds.go

用go编写了ds和pds，用以打印目录结构