rpk: rpk redpanda tune all --output-script seems broken

[c4milo]

Version & Environment

Redpanda version: (use rpk version):

redpanda@aks-default-14936645-vmss000002:/tmp$ rpk --version
rpk version v23.3.4 (rev e562b3441c)

What went wrong?

rpk redpanda tune all --output-script blah.sh doesn't seem to work. I was expecting it to write a script to the provided file or to just print it to stdout if no file path is given.

This is what happened:

Scenario 1

When giving a non-existing file.
Expectation: create it.

redpanda@aks-default-14936645-vmss000002:/tmp$  rpk redpanda tune all --output-script blah2.sh
unable to check if "blah2.sh" is a dir or a file: stat blah2.sh: no such file or directory

Scenario 2

When giving an existing file.
Expectation: write to it the script.

redpanda@aks-default-14936645-vmss000002:/tmp$  rpk redpanda tune all --output-script blah.sh
All tuners were disabled, so none were applied. You may run `rpk redpanda mode prod` to enable the recommended set of tuners for non-containerized production use.
TUNER                           APPLIED         ENABLED         SUPPORTED       ERROR
aio_events             false  false  true
ballast_file           false  false  true
clocksource            false  false  false  Clocksource setting not available for this architecture
coredump               false  false  true
cpu                    false  false  true
disk_irq               false  false  true
disk_nomerges          false  false  true
disk_scheduler         false  false  false  open : no such file or directory
disk_write_cache       false  false  false  Disk write cache tuner is only supported in GCP
fstrim                 false  false  false  dial unix /var/run/dbus/system_bus_socket: connect: no such file or directory
net                    false  false  true
swappiness             false  false  true
transparent_hugepages  false  false  true

redpanda@aks-default-14936645-vmss000002:/tmp$ cat blah.sh
#!/bin/bash

# Redpanda Tuning Script
# ----------------------------------
# This file was autogenerated by RPK