There is a command group 'az_iot_hub'. This group of commands could 'manage azure iot hubs'. The group of commands has global parameter '--debug' which means 'Increase logging verbosity to show all debug logs.'. The group of commands has global parameter '--help -h' which means 'Show this help message and exit.'. The group of commands has global parameter '--only-show-errors' which means 'Only show errors, suppressing warnings.'. The group of commands has global parameter '--output -o' which means 'Output format.'. The group of commands has global parameter '--query' which means 'JMESPath query string. See <a href="http://jmespath.org/">http://jmespath.org/</a> for more information and examples.'. The group of commands has global parameter '--subscription' which means 'Name or ID of subscription. You can configure the default subscription using `az account set -s NAME_OR_ID`.'. The group of commands has global parameter '--verbose' which means 'Increase logging verbosity. Use --debug for full debug logs.'. This group contains a child command 'az_iot_hub_show connection string'.The syntax is: az iot hub show-connection-string [--all]
                                  [--hub-name]
                                  [--ids]
                                  [--key {primary, secondary}]
                                  [--policy-name]
                                  [--resource-group]
                                  [--subscription]. The 1th example of the child command would be to use it to 'show the connection string of an iot hub using default policy and primary key', the syntax is: az iot hub show-connection-string --name MyIotHub. The 2th example of the child command would be to use it to 'show the connection string of an iot hub using policy  service  and secondary key', the syntax is: az iot hub show-connection-string --name MyIotHub --policy-name service --key secondary. The 3th example of the child command would be to use it to 'show the connection strings for all iot hubs in a resource group', the syntax is: az iot hub show-connection-string --resource-group MyResourceGroup. The 4th example of the child command would be to use it to 'show the connection strings for all iot hubs in a subscription', the syntax is: az iot hub show-connection-string. The 5th example of the child command would be to use it to 'show the connection strings for an iot hub   autogenerated', the syntax is: az iot hub show-connection-string --key primary --policy-name MyPolicy. The parameter '--all' is optional. allow to show all shared access policies.. The parameter '--hub-name --name -n' is optional. iot hub name.. The parameter '--ids' is optional. one or more resource ids (space-delimited). it should be a complete resource id containing all information of 'resource id' arguments. you should provide either --ids or other 'resource id' arguments.. The parameter '--key' is optional. the key to use.. The parameter '--policy-name' is optional. shared access policy to use.. The parameter '--resource-group -g' is optional. name of resource group. you can configure the default group using `az configure --defaults group=<name>`.. The parameter '--subscription' is optional. name or id of subscription. you can configure the default subscription using `az account set -s name_or_id`.. 