Output Format Changing the output format of CLI commands
Default Output Format
The default output format is called human-readable. It will print tables or text answers in response to your CLI commands.
JSON Output Format
The only alternative format is JSON. You can request it by adding the --format=json key to a command.
Copy vmq-admin listener show --format=json
Copy {"table":[{"type":"vmq","status":"running","address":"0.0.0.0","port":"44053","mountpoint":"","max_conns":10000,"active_conns":0,"all_conns":0},{"type":"mqtt","status":"running","address":"127.0.0.1","port":"1883","mountpoint":"","max_conns":10000,"active_conns":0,"all_conns":0},{"type":"mqttws","status":"running","address":"127.0.0.1","port":"1887","mountpoint":"","max_conns":10000,"active_conns":0,"all_conns":0},{"type":"http","status":"running","address":"127.0.0.1","port":"8888","mountpoint":"","max_conns":10000,"active_conns":0,"all_conns":0}],"type":"table"}% To pretty-print your JSON or extract the table object, use the jq command. Currently, not all responses give you a nice table and attributes format. Namely, vmq-admin metrics show will only give the metrics as text.
Copy vmq-admin listener show --format=json | jq '.table'
Copy [
{
"type" : "vmq" ,
"status" : "running" ,
"address" : "0.0.0.0" ,
"port" : "44053" ,
"mountpoint" : "" ,
"max_conns" : 10000 ,
"active_conns" : 0 ,
"all_conns" : 0
} ,
{
"type" : "mqtt" ,
"status" : "running" ,
"address" : "127.0.0.1" ,
"port" : "1883" ,
"mountpoint" : "" ,
"max_conns" : 10000 ,
"active_conns" : 0 ,
"all_conns" : 0
} ,
{
"type" : "mqttws" ,
"status" : "running" ,
"address" : "127.0.0.1" ,
"port" : "1887" ,
"mountpoint" : "" ,
"max_conns" : 10000 ,
"active_conns" : 0 ,
"all_conns" : 0
} ,
{
"type" : "http" ,
"status" : "running" ,
"address" : "127.0.0.1" ,
"port" : "8888" ,
"mountpoint" : "" ,
"max_conns" : 10000 ,
"active_conns" : 0 ,
"all_conns" : 0
}
]