I have two distinct network clipboard programs. One called Clipper, uses a Mysql backend
in PHP accessed over http. The other, Bsrv, uses raw TCP sockets, and is ephemeral, though
with the facility to dump and restore (but if it terminates, clips in memory are lost).
Then I have a `bsrv` running in my Pi3, which are accessed via the `aclient` script,
which sets the backend variable and then calls `bclient`.

Then I have a `cman` script (written by Gemini) which streamlines usage. I refer to 
aclient clips by prepending a comma, and cclient clips by prepending a `.`, and the 
clipboard is just referred to by `.`. Then `cman` has two subcommands, `get` and `put`,
for the two most common cases with `aclient` and `cclient`. Then there are two one line
bash scripts so that `get` is `cman get`, and `put` is `cman put`.

So e.g.
```bash
echo hello | put ,c    # put "hello" to bsrv clip "c"
get ,c -o ,d           # duplicate this clip to bsrv clip "d"
put -i ,d ,e ,f        # duplicate this clip to bsrv clips "e" and "f"
put -i . ,c            # paste into clip "c"
get ,c | sort | put ,c # pipe clip "c" through sort and replace 
```

* Clipper: see [NetworkClipboard3](/lang/python/net/tcp/NetworkClipboard3)
* Bsrv: see [NetworkClipboard](/lang/python/net/tcp/NetworkClipboard)
* [[Cman]]