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Full Discussion: Wtmp empty everyday
Operating Systems AIX Wtmp empty everyday Post 302814099 by depam on Tuesday 28th of May 2013 05:40:35 PM
Old 05-28-2013
Thanks. Found a 'cp -p dev/null /var/adm/wtmp' from crontab.

Moderator's Comments:
Mod Comment edit by bakunin: thanks for the follow-up. I changed the threads title to "solved".

Last edited by bakunin; 05-28-2013 at 07:15 PM..
 

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wtmpconvert(8)						      System Manager's Manual						    wtmpconvert(8)

NAME
wtmpconvert - Modify connect time accounting records from DIGITAL UNIX releases 4.0x and prior to new format SYNOPSIS
/usr/lbin/wtmpconvert [-vnrp?h] input_file [output_file] OPTIONS
Restore new format to old format. Verbose. Display lines while converting. Do not preserve contents of input file. Formatted print only. Do not convert. (May be used with the -r option). Display usage message. DESCRIPTION
The wtmpconvert command reads records from a connect time accounting file, such as /var/adm/wtmp, and converts the record format to the updated struct utmp format. If no output file is specified or if the output file path is identical to the input file path, wtmpconvert makes a backup copy of the original input file using the following algorithm: If filename.orig exists. Where n is a unique number. The wtmpconvert command attempts to detect an input file that is in the wrong format (for example, input file is already a new format file). A warning message is issued in this case, but conversion continues. EXIT STATUS
Success. An error occurred. EXAMPLES
To convert an old format accounting file to the new format: wtmpconvert /var/adm/wtmp.prev Upon completion of this command, /var/adm/wtmp.prev will have been converted to the new format. The original /var/adm/wtmp.prev is renamed to /var/adm/wtmp.prev.orig. To convert a wtmp file in new format to the old format: wtmpconvert -r /var/adm/wtmp /var/adm/wtmp.old FILES
Accounting header files that define the format for the login database file. The active login/logoff database files. SEE ALSO
Commands: acct(8), acctcon(8), acctmerg(8), date(1), runacct(8) Functions: getutent(3) Files: utmp(4), wtmp(4) wtmpconvert(8)
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