Почему doesn “clpasswd” знает “-R”?

Двоичный файл проверяет свое имя.

0:root@SERVER:/root # ln -s /usr/es/sbin/cluster/utilities/clpasswd /tmp/passwd
0:root@SERVER:/root # /tmp/passwd -R files root
Changing password for "root"
root's New password:
Terminating from signal
0:root@SERVER:/root # mv /tmp/passwd /tmp/clpasswd
0:root@SERVER:/root # /tmp/clpasswd -R files root
/tmp/clpasswd: illegal option -- R


Usage: clpasswd cluster_user [ -g ResourceGroup ]
Where:
    -g ResourceGroup - Update on participating nodes only
                       Otherwise all cluster nodes receive update

0:root@SERVER:/root #