On Jan 23 2024, at 2:23 pm, Peter P. <peterparker@fastmail.com> wrote:
It seems that the jack_lsp tool, which lists jack ports/connections on
the command line, is only available as part of the jackd2 package

I believe when FalkTX took over maintenance of jackd the utility programs were split out to a separate package so that they would not need to duplicate code between the jackd 1 and jackd 2 repositories.  Perhaps look for a separate package with jack and tools in the name.  On Fedora that package is jack-example-tools.
The repository is here:
https://github.com/jackaudio/example-clients

-- Chris Caudle