root@node-7:~# /opt/quagga/sbin/zrpcd --help
/opt/quagga/sbin/zrpcd: invalid option -- '-'
Usage : zrpcd [OPTION...]
Daemon which manages rpc configuration/updates from/to quagga
zrpc configuration across thrift defined model : vpnservice.
-p, --thrift_port Set thrift's config port number
-P, --thrift_notif_port Set thrift's notif update port number
-N, --thrift_notif_address Set thrift's notif update specified address
-h, --help Display this help and exit
root@node-7:~# echo $?
1
Expected: The usage is printed and exit code is 0
actual: