The name of a Unix SVR4 wtmp format file to log
Accounting-Request messages. All Accounting-Request messages will be
logged. If WtmpFileName is not defined, no messages will be logged in this
format. The default is no logging. The file name can include
Section 3.3, which
means that, for example, using the %c specifier, you can maintain separate
accounting log files for each Client. The WtmpFileName file is always
opened written and closed for each message, so you can safely rotate it at
any time. Start messages are logged as USER_PROCESS (7), all other
messages are logged as DEAD_PROCESS (8).
You may wish to use your
standard Unix administration tools (such as last(1)) to process
information in the wtmp file.
Tip
RedHat Linux 6.1 and
later uses a modified format for wtmp files, compared with earlier
versions. In order to use RedHat tools like last on a wtmp file produced
by Radiator, you will need to use the -o flag (which specifies lib5c
format).