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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?
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Sysadmin because even developers need heroes!!!

HP-UX: Boot Into Single User Mode

Question: I know how to boot into single user mode under Linux and FreeBSD. But, how do I boot into single user mode under HP-UX (HP9000) UNIX operating system?
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Is There a UNIX / Linux unerase / undelete Command?

Q. Is There a UNIX / Linux unerase or undelete command? How do I undelete files under a UNIX / Linux system?
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Linux kernel: Uhhuh. NMI received for unknown reason 30

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?
A. This is caused when the system is hanging under load. Add any one of the following to you /boot/grub.conf file:

  1. Disable the NMI watchdog by adding “nmi_watchdog=0
  2. Disable the high precision event timer (HPET) by adding “nohpet

Open grub.conf, type:
vi grub.conf
Make modification to kernel line as follows:

 
title Red Hat Enterprise Linux AS (2.6.9-78.0.8.EL)
        root (hd0,0)
        kernel /vmlinuz-2.6.9-78.0.8.EL ro nohpet root=/dev/VolGroup00/LogVol00 nohpet
        initrd /initrd-2.6.9-78.0.8.EL.img

Save and close the file. Reboot the server:
# reboot

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Can you tell me how to write a UNIX korn shell script program? I’m new to UNIX scripting and HP-UX UNIX operating system.
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Find Linux / UNIX Kernel Version Command

How do I find out what kernel version I am currently running under Debian Linux or any other Linux distribution using a shell prompt? How do I find out Unix kernel version?
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HP-UX: Find Out If Recommend Security Patch Applied Or Not

How do I compare the HP-UX UNIX system output with the most current vendor recommended and security patches?
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Linux Rescan HP Smart Array For New Disks

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Re register Linux Server System with RHN ( Red Hat Network )

Q. After re-installing my HP server system, RHN is not working. How do I re-register my system with Red Hat Network (RHN) again?
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Red Hat Enterprise Linux: Apply package updates from the Red Hat Network (RHN)

Q. How can I apply package updates from Red Hat Network (RHN) for my HP Red Hat Enterprise Linux Server?
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