Delete SSH Keys

Posted on in Categories last updated June 24, 2010

One my user leaves the office and I’d like to disable her access to our UNIX / Linux system. How do I delete ssh key from the UNIX systems so that user can not log in?

There are unfinished transactions remaining. You might consider running yum-complete-transaction first to finish them

Posted on in Categories , , , , last updated October 17, 2009

While updating my CentOS / RHEL HP Linux server via yum command it givens an error which read as follows:

There are unfinished transactions remaining. You might consider running yum-complete-transaction first to finish them

How do I fix this problem under RHEL / CentOS Linux 5.x server operating systems?

Linux kernel: Uhhuh. NMI received for unknown reason 30

Posted on in Categories , , , last updated January 16, 2009

Q. I’ve upgrade my CentOS / RHEL (Red Hat Enterprise Linux) 4.7 on HP ProLiant DL580 G5 and it is showing unknown NMI errors in the logs:

Uhhuh. NMI received for unknown reason 30.
Dazed and confused, but trying to continue
Do you have a strange power saving mode enabled?

Uhhuh. NMI received for unknown reason 20.
Dazed and confused, but trying to continue
Do you have a strange power saving mode enabled?

How do I fix this error?