No ckan-pycsw command is available.

[frafra]

The spatial extension offers the ckan-pycsw command [...]
-- https://github.com/ckan/ckanext-spatial/blob/992b2753fc24d0abb12ced5cf5aaa3a853ca9ea4/doc/csw.rst

There is no such command.

[amercader]

This is not a ckan command, it's standalone script located in bin, as described in the "How it works" section.

cd /usr/lib/ckan/default/src/ckanext-spatial
python bin/ckan_pycsw.py --help

I haven't personally used this command in a long time so it would be good to see if it still works as expected

[frafra]

Yes, thank you. The script itself is broken. See #298 and #299.