Thanks,
I can now run the help command
Command> software-packages -h
usage: software-packages [-h] {stage,unstage,validate,install,list} ...
optional arguments:
-h, --help show this help message and exit
sub-commands:
{stage,unstage,validate,install,list}
stage Stage software update packages
unstage Purge staged software update packages
validate Validate software update packages
install Install software update packages
list List details of software update packages
but the one as documented on the site still fails (with double '--' or a single '-') :
Command> software-packages list --staged
usage: software-packages [-h] {stage,unstage,validate,install,list} ...
software-packages: error: unrecognized arguments: –-staged
Command>
Command> software-packages list -staged
usage: software-packages [-h] {stage,unstage,validate,install,list} ...
software-packages: error: unrecognized arguments: –staged