"who" and "w" do not work Post: 84236

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Operating Systems AIX "who" and "w" do not work Post 84236 by bakunin on Friday 23rd of September 2005 03:00:27 AM

09-23-2005

Registered User

If you see a dump from /etc/security/user then something has really gone wild. Of course I can only guess at what is wrong, but have you checked your root-fs? Could it be that your i-nodes are cross-linked or something such?

There is a file /etc/security/failedlogin, which should contain logs about failed login attempts in /var/adm/wtmp format. If "last" fails on these two you can try "who" to get a similar formatted list:

who /etc/security/failedlogin

Another thing you could try is using "last" with the "-f <file>" parameter. maybe it helps to explicitly state the file it should work from. The same goes for /etc/utmp.

Hope this helps and I would appreciate follow-up information about what comes up about the system. Perhaps I would reinstall the system from a CD to get it to a clean state in a productive environment, but it should be much more informative to find out what the problem really is.

bakunin

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utmp

utmp(4) 						     Kernel Interfaces Manual							   utmp(4)

NAME

       utmp, wtmp - Login records

SYNOPSIS

       #include <utmp.h>

DESCRIPTION

       The  utmp  file	records information about who is currently using the system.  The file is a sequence of utmp entries, as defined in struct
       utmp in the utmp.h file.

       The utmp structure gives the name of the special file associated with the user's terminal, the user's login name, and the time of the login
       in the form of time(3).	The ut_type field is the type of entry, which can specify several symbolic constant values. The symbolic constants
       are defined in the utmp.h file.

       The wtmp file records all logins and logouts.  A null user name indicates a logout on the associated terminal.  A terminal referenced  with
       a tilde (~) indicates that the system was rebooted at the indicated time.  The adjacent pair of entries with terminal names referenced by a
       vertical bar (|) or a right brace (}) indicate the system-maintained time just before and just after a date command has	changed  the  sys-
       tem's time frame.

       The  wtmp  file is maintained by login(1) and init(8).  Neither of these programs creates the file, so, if it is removed, record keeping is
       turned off.  See ac(8) for information on the file.

FILES

RELATED INFORMATION

       ac(8), init(8), last(8), lastcomm(8), login(1), who(1), wtmpconvert(8).	delim off

																	   utmp(4)