how to know utmp/utmpx file are corrupted..

[sukumar maddela]

Hi all,

Logname command is not working, i would like to know my utmp/utmpx files are corrupted or not. can any one give some suggestion.

[Devender Khatana]

Hi,

Does last and lastb command also do not work? If yes then this should be the only case.

HTH,
Devender

[Cem Tugrul]

Sukumar,
Are you able to run "last" command?

[Robert-Jan Goossens]

Hi,

# cat /etc/utmp | /usr/sbin/acct/fwtmp

You can not edit these files, but with above command you can read the /etc/utmp file.

etc/utmp contains a record of all users currently logged onto the system. It is recommended not to trim the utmp file. Note: When using SAM to trim log files, /etc/utmp will not be a choice.

Regards,
Robert-Jan

[sukumar maddela]

last and lastb both are working properly

[James R. Ferguson]

Hi:

IF you are asking about '/etc/utmp' then, see if 'who' returns your expected results.

Both 'logname' and 'who' read '/etc/utmp'. Make sure that the permissions on '/usr/bin/logname' are such that it is executable by everyone.

Regards!

...JRF...