ftp> site adduser pure1 blah 192.168.1.1
200- User pure1 created
200- IP 192.168.1.1 added to pure1
200 Command okay
ftp> site chgroup pure1 siteop
500 No command handler for SITE CHGROUP
ftp> site change pure1 group siteop
550 User pure1 not found: pure1 is deleted