There is a command group 'az_synapse_linked service'. This group of commands could 'manage synapse s linked services'. 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_synapse_linked service_set'.The syntax is: az synapse linked-service set --file
                              --name
                              --workspace-name
                              [--no-wait]. The 1th example of the child command would be to use it to 'update an exist linked service  pay attention to add     at the front of the file path as the best practice for complex arguments like json string', the syntax is: az synapse linked-service set --workspace-name testsynapseworkspace \
  --name testlinkedservice --file @"path/linkedservice.json". The parameter '--file' is required. It is used to properties may be supplied from a json file using the `@{path}` syntax or a json string.. The parameter '--name -n' is required. It is used to the linked service name.. The parameter '--workspace-name' is required. It is used to the workspace name.. The parameter '--no-wait' is optional. do not wait for the long-running operation to finish.. 