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Linux : DirectAdmin Cannot find /usr/include/et/com_err.h

Get the following error installing DirectAdmin? *** Cannot find /usr/include/et/com_err.h. (yum install libcom_err-devel) *** Installation didn’t pass, halting install. Once requirements are met, run the following to continue the install: cd /usr/local/directadmin/scripts ./install.sh As suggested by the installer, you need to install “libcom_err-devel” package as followed : yum install libcom_err-devel libcom_err To resume the installation,… Read More »

VirtualBox : How to automatically start VM in background

Oracle VirtualBox do not have such feature through the GUI. However, you can use the command line and the task scheduler to do so. First, you need to grab guest virtual machine ID that you want to be started in background. Open the command prompt, and change directory as followed : cd C:\Program Files\Oracle\VirtualBox\ Then… Read More »

Linux : apc.shm_size now uses M/G suffixes, please update your ini files in Unknown on line 0

After updating your OS or APC Pecl module, you probably noticed this in your Apache log file : PHP Warning: PHP Startup: apc.shm_size now uses M/G suffixes, please update your ini files in Unknown on line 0 As mentioned, size values must now be specified with suffix : M = Megabyte G = Gigabyte To… Read More »

Linux : Bridge support not available: brctl not found

Getting this error message while trying to bring up your newly configured bridge interface on RHEL/CentOS Linux? You are missing “bridge-utils” package. Simply install it as followed and bring up the interface again : yum install bridge-utils NOTE : Click here to see our HowTO create a bridge interface article

Windows : How to automatic logon

Here is how to turn on user automatic logon for Windows 7 and Windows Server 2008. Windows 7 : Both options are available (using the GUI or directly modifying the registry as for Windows Server 2008). – Start > Run – Type “control userpasswords2” – Then click OK [x] > [ ] Uncheck the box… Read More »

Linux : How to view hard disk partitions UUIDs?

On modern/latest Linux and Unix distributions, system rely on UUID rather than disk device name itself. To find out the UUID, you can use this simple command called “blkid” : blkid <DEVICE_PARTITION_NAME> Example : blkid /dev/sda1 Will return something like this : /dev/sda1: UUID=”1abd977f-65e0-46ab-b2bb-3651053c6e77″ TYPE=”ext4″

Windows : FileZilla is running in kiosk mode

Got this message attempting to create a new server connection into the FileZilla Site Manager? FileZilla is running in kiosk mode. ‘Normal’ and ‘Account’ logontypes are not available in this mode. To resolve this and make FileZilla save your profile, go to : – Edit > Settings – On the left pane (Select page) >… Read More »

VMware : How to reset ESXi root password?

Lost your root password? Well, this is very unfortunate! This tutorial will show you how to reset ESXi root password. There is no supported method to “reset” the root password, VMware suggest to boot from ESXi installer disk and select “Install ESXi, preserve VMFS datastore” option. This will overwrite the current installation (fresh install, overwriting… Read More »

Linux : general protection rip:x0 rsp:x0 error:0

Seeing such message in your system logs? general protection rip:803886e rsp:ffc22690 error:0 This mean you have a hardware fault. Can be likely memory, but can be something else as well. *RIP is the 64 bit execution pointer.

Linux : How to find what program or service is listening on ports

To find out the network ports currently opened by running software on a Linux machine, simply use LSOF (list open files). This can also sort out the communication port as well. To display IPv4 ports : lsof -Pnl +M -i4 To display IPv6 ports : lsof -Pnl +M -i6