Getting info out of btmp

[Stefan Rahm]

I am trying to, in a nice way, read the different parts of information in the /var/adm/btmp-file. Is there any function that already does this, I am not looking for lastb, or do I need to get my haneds dirty?

[Steven Sim Kok Leong]

Hi,

Use strings ie.

# strings /var/adm/btmp

Hope this helps. Regards.

Steven Sim Kok Leong
Brainbench MVP for Unix Admin
http://www.brainbench.com

[CHRIS_ANORUO]

You can get more info from lastb by using lastb -R|pg or achieving the information to a file:
cat /var/adm/btmp | /usr/sbin/acct/fwtmp > /tmp/ascii_btmp

[Stefan Rahm]

I appreciate the help I've been given, but I think I am looking for something akin to getpwent(). If that doesn't exist then the help I've been given is gratefully accepted.

[Andreas Voss]

Hi,

if you plan to write a c program you could use the system call getut() to examine the btmp file.
See 'man getut'

Regards

[Stefan Rahm]

=) Now my only problem is that it seems to read from a different file, not btmp, wtmp nor utmp. What am I doing wrong?

[Andreas Voss · Accepted solution]

Hi,

before using getut set the file you want to read with ie:

utmpname("/var/adm/btmp");

Regards