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radwho Format Strings A format string controls the output of every record from ‘radutmp’. It contains two types of objects: ordinary characters, which are simply copied to the output, and format specifications, each of which causes output of a particular piece of information from the ‘radutmp’ record.
Each format specification starts with an opening brace and ends with a closing brace. The first word after the brace is the name of the format specification. The rest of words are positional arguments followed by keyword arguments. Both are optional. The keyword arguments begin with a colon and must follow the positional arguments.
The full list of format specifications follows.
Causes the newline character to be output. If the optional count is supplied, that many newlines will be printed
Advance to the next tabstop in the output stream. If optional num is present, then skip num tabstops. Each tabstop is eight characters long.
The following specifications output particular fields of a ‘radutmp’ record. They all take two positional arguments: width and title.
The first argument, width sets the maximum output
length for this specification. If the number of characters actually output
is less than the width, they will be padded with whitespace either to
the left or to the right, depending on the presence of the :right
keyword argument. If the number of characters is greater than width, they
will be truncated to fit. If width is
not given, the exact data are output as is.
The second argument, title, gives the title of this column for the heading line. By default no title is output.
Every field specification accepts at least two keyword arguments.
The keyword :right may be used to request alignment to the right
for the data. This keyword is ignored if width is not given.
The keyword :empty followed by a string causes radwho
to output that string if the resulting value for this specification
would otherwise be empty.
Print the user login name.
Print original login name as supplied with the request.
The GECOS field from the local ‘/etc/passwd’ corresponding to the login name. If the user does not have a local account, his login name is output.
NAS port number
The session ID.
The NAS name or IP.
The :nodomain keyword suppresses the output of the domain part of
the name, i.e., the hostname is displayed only up to the first dot.
Framed IP assigned to the user, if any.
The :nodomain keyword suppresses the output of the domain part of
the name, i.e. the hostname is displayed only up to the first dot.
Connection protocol as reported by Framed-Protocol attribute.
If the symbolic value is found in the dictionary file, it will be
displayed. Otherwise, the numeric value will be displayed as is.
Date and time when the session started.
The :format keyword introduces the strftime format string
to be used when converting the date for printing. The default value is
%a %H:%M.
Total time of the session duration.
Delay time (see section Acct-Delay-Time).
Port type as reported by the value of the NAS-Port-Type attribute.
If the symbolic value is found in the dictionary file, it will be
displayed. Otherwise, the numeric value will be displayed as is.
The calling station ID.
If the request was forwarded to a realm server, print the symbolic name
of the realm from the ‘raddb/realms’ file. If no symbolic name
is found, print the remote server IP or hostname. In the latter case,
the :nodomain keyword may be used to suppress the output of the
domain part of the name, i.e. to display the hostname only up to the
first dot.
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