fwtmp, wtmpfix - manipulate connect accounting records
reads from the standard input and writes to the standard output, con‐
verting binary records of the type found in to formatted ASCII records.
The ASCII version is useful to enable editing, via ed(1), bad records
or for general purpose maintenance of the file.
The argument is used to denote that input is in ASCII form, and output
is to be written in binary form. The arguments and are independent,
respectively specifying ASCII input and binary output. Therefor, is an
ASCII to ASCII copy and is a binary to binary copy. should be used for
reading If is not used, structure is read.
examines the standard input or named files in format, corrects the
time/date stamps to make the entries consistent, and writes to the
standard output. A can be used in place of files to indicate the stan‐
dard input. If time/date corrections are not performed, will fault
when it encounters certain date-change records.
Each time the date is set, a pair of date change records is written to
The first record is the old date denoted by the string old time placed
in the line field and the flag placed in the type field of the struc‐
ture. The second record specifies the new date, and is denoted by the
string placed in the line field and the flag placed in the type field.
uses these records to synchronize all time stamps in the file. nulli‐
fies date change records when writing to the standard output by setting
the time field of the structure in the old date change record equal to
the time field in the new date change record. This prevents and from
factoring in a date change record pair more than once.
In addition to correcting time/date stamps, wtmpfix checks the validity
of the name field to ensure that it consists solely of alphanumeric
characters or spaces. If it encounters a name that is considered
invalid, it changes the login name to and writes a diagnostic to the
standard error. This minimizes the risk that will fail when processing
connect accounting records.
wtmpfix generates the following diagnostics messages:
generates no errors, even on garbage input.
FILESSEE ALSOed(1), acct(1M), acctcms(1M), acctcom(1M), acctcon(1M), acctmerg(1M),
acctprc(1M), acctsh(1M), runacct(1M), acct(2), acct(4), utmp(4),