Linux Tutorial

Missing Dependency: libmcrypt.so.4

Fabio Milano — Fri, 27 Aug 2010 17:45:32 +0000

Questions: I can not get mcrypt to install for php on Centos yum php-mcrypt does not work Answer: Bongo’s Codeways to the rescue You are trying to install mcrypt on a x86_64 or 64bit system Check out the steps here Install libmcrypt and...

How to do Ajax style drag-n-drop sorting with Rails

Harry Che — Fri, 11 Jun 2010 23:43:45 +0000

Here is a quick tutorial on how to do this. The “secret” or easy solution is to use Rails “acts_as_list” plugin. 1. Install the “acts_as_list” plugin that is going to be used for this. With Rails 2.0+, the plugin is no longer part of Rails core, so...

Nagios Email Notification Frequency or Interval

Fabio Milano — Tue, 25 May 2010 21:29:45 +0000

Question: How do I configure how often Nagios emails notifications about problems. Solution: The notification interval setting for service and hosts allows you to configure when email notifications get sent by Nagios Nagios Notifications Before...

What Computer User is Logged on to

Fabio Milano — Thu, 20 May 2010 21:12:55 +0000

Question: How do I find out which computer a user is logged on to on the network. How do I find out which users are logged on to a computer on the network. Solution: PStools from sysinternals has a program called psloggedon.exe that scans the...

Vyatta Port Forwad port X to port Y

Fabio Milano — Mon, 11 Jan 2010 01:05:32 +0000

Scenario / Question: How do I port forward port 2202 to port 22 on 192.168.0.1 server with Vyatta. Solution / Answer: Configure DNAT rules with port destination and firewall destination rules NAT RULES set service nat rule 600 type destination set...

Vyatta d945gclf2 Boot Fail

Fabio Milano — Thu, 07 Jan 2010 04:15:17 +0000

Scenario / Question: I installed Vyatta on a Harddrive connected to a D945gclf2 Intel Atom 330 board and Vyatta will not boot. Error no boot device found. Solution / Scenario: The boot flag was not properly set on the partition. Use fdisk and set...

VirtualBox Auto Start VM Centos Fedora RedHat

Fabio Milano — Tue, 10 Nov 2009 19:45:33 +0000

Scenario / Question: How do I get my VirtualBox Guest VM’s to start and stop when the host system reboots, shutdown, or starts. Solution / Answer: Create an init.d script so that VirtualBox Guest VM are controlled as a system service. Install...

Fedora 11 external network and internal network

Fabio Milano — Fri, 30 Oct 2009 22:05:19 +0000

Scenario / Question: I have a computer connected to external network with one network card and connected to internal network with another network card. I want to have all external traffic use one nic and all internal traffic use another...

VirtualBox Modify VM Settings

Fabio Milano — Tue, 27 Oct 2009 22:16:00 +0000

Scenario / Question: How do I modify the parameters of my VM in VirtualBox from the command line Solution / Answer: Use the tool VBoxManage Install VirtualBox “Install VirtualBox without GUI or Headless” Create a VirtualBox VM...

VirtualBox Controlling Headless VM

Fabio Milano — Tue, 27 Oct 2009 21:30:12 +0000

Scenario / Question: How do I control my VirtualBox VM’s from the command line Solution / Answer: Use the tool VBoxManage Install VirtualBox “Install VirtualBox without GUI or Headless” Create a VirtualBox VM...