fwtmp man page on DigitalUNIX

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fwtmp(8)							      fwtmp(8)

       fwtmp,  acctwtmp,  wtmpfix  - Modify connect time accounting records to
       change formats and to make corrections in the records

       fwtmp [-ic]

       acctwtmp 'Reason'

       wtmpfix [-o] [file]

       The fwtmp command accepts ASCII records in the type utmp structure for‐
       mat as input.  The fwtmp command converts output to type utmp structure
       formatted binary records.  The fwtmp command converts ASCII  type  utmp
       structure  formatted input records to binary output records.  The wtmp‐
       fix appends the active login records  to	 file  with   the  login  time
       changed to the current time.

       fwtmp [-ic]

       The  fwtmp command reads records from standard input and writes records
       to standard output. Normally,  information  in  record  fields  of  the
       /var/adm/wtmp file is entered as binary data by the init and login pro‐
       grams during the life of the /var/adm/wtmp  file.  These	 /var/adm/wtmp
       file  records have nine fields formatted according to members of a type
       utmp structure defined in the utmp.h include file. The fwtmp command is
       also  capable of writing properly formatted ASCII records from standard
       input into a file when you use the -i option.

       Whenever you enter properly formatted ASCII records for	conversion  to
       binary  records using the -i option from the standard input device, you
       must enter data for each field of the 9-field record in the same	 order
       as that of type utmp structure members using a space as a field separa‐
       tor. The following table lists record fields in the order  they	should
       be  entered,  the  type utmp structure member name, and the purpose and
       entry character length.	The user login name, which must	 have  exactly
       sizeof(ut_user)	characters.   The  inittab ID, which must have exactly
       sizeof(ut_id) characters.  The device name,  which  must	 have  exactly
       sizeof(ut_line)	characters.  The process ID, which must have 5 decimal
       places.	The type of entry, which must have 2 decimal places. The  type
       of entry may have any one of several symbolic constant values. The sym‐
       bolic constants are defined in the utmp.h  header  file.	  The  process
       termination status, which must have 4 decimal places.  The process exit
       status, which must have 4 decimal places.   The	starting  time,	 which
       must  have  10  decimal	places.	 The hostname, which must have exactly
       sizeof(ut_host) characters.

       All record field entries you make from standard input must be separated
       by a space. Also, you must fill all string fields with blank characters
       up to the maximum string size. All decimal values must have the	speci‐
       fied  number  of decimal places with preceding 0s (zeros) to fill empty
       digit positions.	 The actual size of character arrays can be  found  in
       the utmp.h include file.

       acctwtmp 'Reason'

       The  acctwtmp command is called by the runacct shell procedure to write
       a utmp formatted record to standard output with the  current  date  and
       time  together  with  a	'Reason' string (sizeof(ut_line) characters or
       less) that you must also enter.

       wtmpfix [-o] [file]

       The wtmpfix command is called by the runacct shell procedure to examine
       standard	 input	or  file records in the wtmp format for corrupted date
       and timestamp entries. Whenever a  corrupted  entry  is	detected,  the
       wtmpfix	command corrects date and timestamp inconsistencies and writes
       corrected records to standard output.  Whenever	the  acctcon1  command
       runs, and a date and timestamp in a /var/adm/wtmp file is incorrect, an
       error is generated when the first corrupted entry is  encountered.  The
       acctcon1 process is aborted whenever such an error is detected.

       The  wtmpfix  command  also  checks  the	 validity of the name field to
       ensure that the name consists only  of  alphanumeric  characters,  a  $
       (dollar	sign),	or  spaces.  Whenever an invalid name is detected, the
       wtmpfix command changes the login name to INVALID and writes a diagnos‐
       tic message to standard error. In this way, the wtmpfix command reduces
       the likelihood that the acctcon2 command may fail.

       Each time a date is entered (on system startup or with  the  date  com‐
       mand)  a	 pair  of  date-change	records is written to the var/adm/wtmp
       file. The first date-change record is the old date,  which  is  entered
       with  the  string  old time (the OTIME_MSG string) in the ut_line field
       and the option OLD_TIME in the ut_type field.  The second record is the
       new  date,  which  is  entered  with the string new time (the NTIME_MSG
       string) in the ut_line field and the option  NEW_TIME  in  the  ut_type
       field.  The  wtmpfix command uses these records to synchronize all date
       and time stamps in the /var/adm/wtmp file. The date-change record  pair
       is then removed.

       You should not use the fwtmp command to correct connect-time accounting
       records because the utmp structure format members are not in  the  cor‐
       rect order for this operation.

       To  convert  binary /var/adm/wtmp records in type utmp structure format
       to an ASCII file called dummy.file, enter a command similar to the fol‐
       lowing: /usr/sbin/acct/fwtmp < /var/adm/wtmp > dummy.file

	      The  content  of binary file /var/adm/wtmpfile as input is redi‐
	      rected to dummy.file as ASCII output.  To convert records in  an
	      ASCII type utmp structure formatted file to a binary output file
	      called /var/adm/wtmp, enter an fwtmp command with the -ic option
	      similar  to the following: /usr/sbin/acct/fwtmp -ic < dummy.file
	      > /var/adm/wtmp

	      The content of ASCII file dummy.file as input is	redirected  to
	      binary file /var/adm/wtmp as output.

       Specifies the command path.  Specifies the command path.	 Specifies the
       command path.  Header file defining structures used to  organize	 login
       information.    Database	  file	 for   currently   logged   in	users.
       Login/logout database file.

       Commands: acct(8), acctcon(8), acctmerg(8), date(1), runacct(8)

       Functions: acct(2)


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