we will improve the description of 47 commands for bin/bookkeeper with BP-64 https://github.com/apache/bookkeeper/issues/4101
# Motivation When executing the command `./bin/bookkeeper shell`, the usage description of each command is not precise enough, - some commands have no description; - if there are descriptions, the explanation of the parameters is not clear so it is difficult for us to understand and use each command. we need to combine the code to understand it, then it takes unnecessary time. Related screenshot information: https://github.com/apache/bookkeeper/assets/42990025/578d0d2f-b443-4f2d-a8f5-d7b3fd1c70c1 <img width="1424" alt="image" src=" https://github.com/apache/bookkeeper/assets/42990025/578d0d2f-b443-4f2d-a8f5-d7b3fd1c70c1 "> # Proposal 1) I plan to improve this function. The first version only involves the optimization of the getUsage method of these 47 commands from `org.apache.bookkeeper.bookie.BookieShell` 2) Use this as the bookkeeper specification. You will also need to follow this specification when adding new command codes later.