* Added `picoput /path/to/pipe [cmd args...]` and `#!/bin/picoget /path/to/pipe`
  * These can send and receive commands to anyone sharing the mount directory
  * Bind mounts, like containers use them, will show the resource in multiple containers
  * Be careful about write permissions on the pipeline, each container has its uid sets
  * Note that `picoput` does not block, but returns an error if nobody is listening
  * Note that an empty command still causes synchronisation
  * Note that `picoget` continues as a shell, with the `[cmd args...]` in `$#` and `$@`