.plz.yaml
[08:25] hackedhead@parakoopa:~/test % plz multi "Hello"
[INFO] Using config: .plz.yaml
===============================================================================
Running command: echo Hello
===============================================================================
Hello
()
[INFO] Process complete
===============================================================================
Running command: date Hello
===============================================================================
/usr/bin/date: invalid date ‘Hello’
()
[ERROR] Process failed
It might not be obvious that this will happen (argument passed to every subcommand) and it's unlikely that a single passthrough argument applies to all the subcommands.