Controlling who and when was logged in
11.1 radwho Show who is logged in by radius now.
11.2 radlast Show the history of logins by radius.
Maintenance commands
11.3 radzap Modify the login records.
11.4 radgrep Quickly find the login record.
11.5 radping Ping the remote machine by the username.
11.6 radauth Check if a user can be authenticated.
11.7 radctl Radctl monitor.
11.8 builddbm Create DBM version of the ‘raddb/users’ file.