How to install OTRS 4 on CentOS 7

In this post I’m going to walk you through installing OTRS 4 on CentOS 7. The procedure will be very similar for Red Hat Enterprise Linux (RHEL) version 7 as this is binary compatible.

Please note that there are some differences between CentOS 6 and CentOS 7: it now ships with systemd and with firewalld so the instructions to install OTRS are pretty different.

Setting up your production server or migrating from one is something you don’t want to do every day. This means you better take a distribution that will receive security upgrades for a long time. This is why I would recommend CentOS version 7 over version 6 at this point in time. (more…)

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Postfix Queue Management

If emails are getting delayed, its better to inspect postfix mail queues, coupled with postfix mail log.

Status/Shape of Mail Queue

Postfix maintains different queues for different purpose.active  and  deferred queues are of our interest.

Ideally, we should never have a mail in deferred queue.

qshape command will show shape of active mail queue by default. Ideally it should be as close as to empty since postfix sends email instantly!

qshape

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How to create hotkeys for Windows sleep and shutdown

Your computer has one, and maybe two, special buttons that you can configure for just these purposes. In addition, you can create shortcuts for these tasks, and assign hotkeys to the shortcuts.

Let’s start with the special buttons that already exist.

In Windows 7, click Start, or in Windows 8, go to the Search charm. Once there, type power, and select Power Options. In the resulting Control Panel window’s left pane, select Choose what the power buttons do. (more…)

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Make website Mobile ready

mobile_readyWith all those new Mobile Devices that are capable to display and handle any kind of data, it is only reasonable to provide your Online content to as much devices as possible and not only Computer.

In this post you will see how easy it is to setup a mobile version of your Website without any Modules or Online Services that are being offered around. (more…)

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login banner Linux

To create a banner so that whenever a user logs into a system will see some default text, you can couple of options

1. put the default text into /etc/motd

2. type echo “<the text you want to display>” into /etc/profile

3. type echo “<the text you want to display>” into user home .profile file. (more…)

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