candlerb commented on issue #5533: Missing CLI error handling in pulsar-admin URL: https://github.com/apache/pulsar/issues/5533#issuecomment-549289170 Another similar one: ``` bin/pulsar-admin topics public/default Expected a command, got public/default Exception in thread "main" com.beust.jcommander.ParameterException: Asking description for unknown command: null at com.beust.jcommander.JCommander.getCommandDescription(JCommander.java:1003) at com.beust.jcommander.JCommander.usage(JCommander.java:988) at com.beust.jcommander.JCommander.usage(JCommander.java:980) at com.beust.jcommander.JCommander.usage(JCommander.java:972) at org.apache.pulsar.admin.cli.CmdBase.run(CmdBase.java:49) at org.apache.pulsar.admin.cli.PulsarAdminTool.run(PulsarAdminTool.java:218) at org.apache.pulsar.admin.cli.PulsarAdminTool.main(PulsarAdminTool.java:260) ^C ```
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