Disable touchpad under Ubuntu

This little tutorial shows, how to disable touchpad under Ubuntu (v. 16.04) permanently. The reason is, that I generally use only the red trackpoint of my Lenovo T530 as a pointing device. I don’t need a touchpad anyway. But when working with the trackpoint, I accidentally touch the touchpad with my thumbs many times. That […]

No space left on device under Ubuntu Linux

Today I had problems (“No space left on device” errors) during a system upgrade of Ubuntu Linux. There where error messages telling me the boot Partition is full:

That’s why I had to find out, whats in this boot folder.

As you can see this folder contains all required stuff to boot the […]

Convert linefeeds for all files in a folder (CRLF to LF)

If you are working in teams using different operating systems, it could happen, that you get files with unsuitable linefeeds in it. For me as a Linux user the bad guys are normally CRLF’s (Carriage Return and Line Feed @see¬†https://en.wikipedia.org/wiki/Newline). To just convert the CRLF’s in a single file to LF you can use the […]

Xubuntu – Fix black screen after wakeup from suspend mode

On Xubuntu¬†14.04.3 LTS I got a black screen after wakeup the machine from suspend mode. This didn’t happen all the time. It was more of a¬†sporadic¬†phenomenon happening after entering the credentials to unlock the machine. Under these¬†circumstances the screen got black and the machine didn’t react on any actions any more. I could got to […]

Resolve problems with authorized_keys permissions

Sometimes I had problems to connect to a server via public key authentication. In most cases I could solve them by setting up the right permissions for the file and path of the authorized_keys file. This can be done as shown below:

“Could not resolve host” error

If you get this¬†error message when trying to update the system (see example below) or just pinging an external host …

… you have to declare an default route:

 

Recover lost images from SD/MMC cards

A very nice and really working recovery tool is ¬†PhotoRec. It’s a very cool commandline tool for Linux which is able to recover all images on a SD or MMC card that have been deleted¬†accidentally. In my case my fingers where faster than my brain and so I had kicked three rally awesome images :-/. […]

List processes after CPU usage

If you piped the result into the head command, you can limit the result to the n entries with the highest CPU usage.

In this example you will see the ten most CPU-consuming processes on the machine. The ‘–‘ before pcpu results in a descending order. Example output:

To see what happens […]