Solved

Best way to clean /var/wtmpx file

Posted on 2012-04-10
5
2,100 Views
Last Modified: 2012-05-08
Hi Expert,

I have a small soalris 10 machine that the /var is getting full, and noticed the /var/adm/wtmpx file is pretty big.
what's the best way to clean it up without disrupting, or losing function? can this be done while having users login without losing there session?

The OS is Solaris 10.

Thanks in Advance.

B4
0
Comment
Question by:bbbb44
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
5 Comments
 
LVL 16

Expert Comment

by:Joseph Gan
ID: 37831028
From the "man wtmpx":
...
The utmpx  database  contains  user  access  and  accounting
     information  for  commands  such  as  who(1),  write(1), and
     login(1). The wtmpx database contains the  history  of  user
     access and accounting information for the  utmpx database.
...

What you could do is, stop utmpd (utmpx monitoring daemon):
# /etc/init.d/utmpd stop

Then, you can move or delete ( depands on what you want to do with the database ) the file. And touch a new file, then restart the daemon.

You can do this at any time, won't losing any users login and sessions. Only will lose some accounting information during which the daemon is shut down.
0
 

Author Comment

by:bbbb44
ID: 37831048
Hi Ganjos,

Thanks for the response.

would doing the #echo "" /var/adm/utmpx command provides the same result as your method? any consequence to the users that are currently login with this command?

Thanks,

B4
0
 
LVL 16

Expert Comment

by:Joseph Gan
ID: 37831057
Hey, this command will clean up the utmpx file, so you will lost all the accounting information, other than that no consequence what so ever to the users login.
0
 
LVL 16

Accepted Solution

by:
Joseph Gan earned 500 total points
ID: 37831063
But the command is "echo '" > /var/adm/utmpx" or "echo "' > /var/adm/wtmpx"
0
 

Author Comment

by:bbbb44
ID: 37831065
Thanks ganjos, I'll run the >/var/adm/wtmpx command to clear the file.

Thx,

Brownson
0

Featured Post

Get 15 Days FREE Full-Featured Trial

Benefit from a mission critical IT monitoring with Monitis Premium or get it FREE for your entry level monitoring needs.
-Over 200,000 users
-More than 300,000 websites monitored
-Used in 197 countries
-Recommended by 98% of users

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I have been running these systems for a few years now and I am just very happy with them.   I just wanted to share the manual that I have created for upgrades and other things.  Oooh yes! FreeBSD makes me happy (as a server), no maintenance and I al…
Java performance on Solaris - Managing CPUs There are various resource controls in operating system which directly/indirectly influence the performance of application. one of the most important resource controls is "CPU".   In a multithreaded…
Learn how to find files with the shell using the find and locate commands. Use locate to find a needle in a haystack.: With locate, check if the file still exists.: Use find to get the actual location of the file.:
This video shows how to set up a shell script to accept a positional parameter when called, pass that to a SQL script, accept the output from the statement back and then manipulate it in the Shell.
Suggested Courses

636 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question