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How to automatically wake up notebook

I came across ACPI wakeup wiki article while writing previous post, got interested and checked how to automatically wake up notebook. It is really simple as you can quickly set wake up time using date command, just remember to use Unix time.

Categories
DevOps

How to automate mouse and keyboard

Recently I was wondering if it would be possible to automate mouse and keyboard actions. The answer is obviously yes as you can use xautomation and xdotool tools. I will describe them in a couple of simple examples.

Categories
SysOps

How to change the MAC address of an Ethernet interface

Change the MAC address of an Ethernet interface and make this change permanent. I will briefly explain how to do this using standard commands and one particularly useful tool MAC Changer.

Categories
SysOps

How to automatically set up external monitor

Recently I was wondering how to automatically set up an external monitor without using desktop utilities as I don’t like to configure it each time. This question provided me a lot of fun as it opens a couple of interesting possibilities.

Categories
SysOps

How to monitor battery capacity

Recently battery in my notebook started to behave erratically. It will charge only to 70-80% of its maximum capacity. I suspect that it is probably slowly dying, so I will have to replace it soon, but at first, I will look at several utilities to monitor battery capacity.

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Debian – How to turn off the system bell

It is very annoying to hear loud beeps at home especially at night or when listening to music. To turn off the system bell just follow a couple of steps below and enjoy pure silence.

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Debian – How to transparently bridge Ethernet interfaces

Yesterday, I wrote a short note about VLAN interfaces. Today, I want to write a short entry on how to bridge Ethernet interfaces to keep things complete as I need to mention about creating ACCESS port to tag packets on desired interface.

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How to create VLAN interface

VLAN (virtual local area network) is very useful concept as you can easily separate device management from users by using appropriate network devices and configuration. I will describe here in a form of a short note how to create VLAN interface using Debian system.