```
:!ls          # run ls
:r! ls        # run ls and paste output into buffer
:w !pc        # pipe buffer into command pc
:'<,'>w !pc   # pipe vis-selected lines into pc
:4,6w !pc     # pipe lines 4..6 into pc
```
now these all give a `Press ENTER` message. To avoid this,
```
:silent w !pc
:silent '<,'>w !pc
```
this latter one is annoying, so hopefully I can write a function and key-combo
to do this, as I use `pc` and `pp` as platform-agnostic commands to read and
write from the system clipboard, and `get X` and `put X` to store stuff in files
in a `~/.jstore/` directory as a means of having a persistent clipboard.