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reboot

Q. I'm trying to recompile my kernel by tying the following commands:

cd /usr/src/sys/i386/conf
cp GENERIC NEWKEN
vi NEWKEN
cd /usr/src
make buildkernel KERNCONF=NEWKEN

But I'm bumped with an error that read as follows:

make: don't know how to make buildkernel. Stop Error and Solution

How do I fix this error?
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Q. I've couple of Linux / Windows server hosted in remote data center? My ISP provides following option for rebooting the box:
a) Graceful shutdown command
b) An IPMI reboot
c) A power strip

Which one is the best way to reboot server and why?
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How do I restart NFS server when network link goes down between two servers or NFS client / server under CentOS 4.x / RHEL / CentOS Linux 5.x?
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Q. I've a central Linux test server. It has GDM based GUI login screen. How do I remove both shutdown and reboot server options from the login screen?
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Ubuntu Linux: Upgrade Linux Kernel

Q. How do I upgrade my Linux kernel version under Ubuntu Linux 7.04 / 7.10?

A. You can use any one of the following method:
(a) Command Line Tools - apt-get

(b) GUI tool

apt-get command - Upgrade Linux Kernel

Open terminal and type the following commands:
$ sudo apt-get update
Now search kernel version:
$ apt-cache search kernel-image
Now install kernel by explicitly specifying version number:
$ sudo apt-get install linux-image-2.6.xx-yy-generic
Replace xx.yy with kernel version number. Reboot the system.

GUI tools

This is recommended method for most user. Click on System > Administration > Update Manager > Click on Check button > Apply all updates including kernel.

Disable ctrl+alt+del on Centos Linux server

How do I disable CTRL + ALT + DEL reboot keys shortcut on Linux server?
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