Hardware

Get the number of available processors and sockets.

Read CPU model specific registers (MSR).

Display processor frequency and statistics.

Find device by the major and minor numbers.

Use smartmontools (S.M.A.R.T. monitoring tools) on Debian-based operating system to perform disk check.

Inspect firmware update using RACADM command-line utility which provides a scriptable interface for Remote Access Controller.

Overclock Raspberry Pi 4 using Raspberry Pi OS.

Determine maximum memory capacity.

Configure sysfs during system boot to apply custom configuration in a simple and convenient way

There are certain situations where I disable Intel Turbo Boost, for example to keep fans quiet during the night time.

It is really easy to hit 2 TB (using 512-byte sectors) partition size limit when using MBR disk partition table. I just hit this problem myself and solved it using GUID partition table format to create one huge partition for data storage.

HP Command Line Array Configuration Utility hpacucli provides several useful and easily scriptable commands for HP array controllers running Linux operating system.

HP Management Command Line Interface hpasmcli provides several useful and easily scriptable commands for HP ProLiant Servers running Linux operating system.

I had a little experience with multi-touch devices, so I was happy to use for a while iiyama TF2234MC multi-touch monitor with Debian Wheezy. It was quite a pleasant experience with a little bit of adventure.

The easiest way to reliably use Serial port within the local network is to use RS-232/422/485 NPort Device Server produced by Moxa company. I will shortly describe how to install NPort 5110 (1-port RS-232 serial device server) on Debian Wheezy.

Several months ago, I have acquired wireless keyboard using tiny Logitech Unifying Receiver. Since that time I was a little worried by the lack of appropriate management options, however recently I found Solaar – a Linux device manager for such peripherals, which solves my doubts.

Today I will shortly describe how to set up Raspberry Pi as a tiny NAS server. I am using one at home daily, and it is a handy appliance.

PCI-1610 is an Advantech 4-port RS-232 Universal PCI Communication Card which comes very handy if you need to connect more devices using serial port.

Recently I installed OpenWRT on Ubiquiti AirRouter as the original firmware is lacking in a couple of areas. Installation is easy and straightforward as all you need to do at the time of writing this post is to use Attitude Adjustment release.

For some reason unknown to me there is no reboot option in web-based user interface but it doesn’t mean that it cannot be done easily as you just need to use one specific URL parameter.

I am using ASUS 1005HA for light web browsing, but recently I experienced CPU fan failure. It’s hard to get a new fan when most people celebrate Christmas. Hopefully, there is a solution that will give me some time.

Managing SPS switches could be real fun if you use expect to automate such tasks.

Save configuration on Allied Telesis AT-AR745.

Connect to the Linksys SRW switch using serial or SSH.