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 […]

Wipe a disk via Linux shell

This is how to wipe a disk via Linux shell:

The command above erases all data on the device /dev/sdc and overrides the data 2 times. Finally every bit is overridden by zeros. So in sum it takes 3 iterations to wipe a disk via Linux shell. n specifies the number of iterations taken place […]

Plesk – regain access to the admin panel via shell

Today I had to regain access to the admin panel of one of my root servers that uses Plesk as administrative panel. I had configured a IP restriction for the panel under Tools and Settings > Restrict Administrative Access. The problem was, that I wanted to access the machine from outside of the company network (my […]

Get file encoding via Linux shell

To find out which encoding a certain file has, you can use the file command on Linux shell:

Output example:

 

Homefolder permissions bug ISPConfig

Today I ran into a still open bug of ISPConfig (ISPConfig 3.1.3 under Debian Jessie). The problem occurred, when I tried to clone a BitBucket repository with a non root SSH-user in his own website root (where permission rights generally should be no problem). Hence I wanted to use key-based authentication for BitBucket, I generated […]

Delete x files from folder in a for i loop

Recently I tried to remove a big bunch of files from one of my raspberry pies where ffmpeg had swamped my SD-card with too many capture images. So I had to delete x files from folder. I just tried:

But that gave me an “unable to execute /bin/rm: Argument list too long” error message. […]

Setup monit behind Apache proxy under ISPConfig

Today I wanted to setup monit behind Apache proxy on my webserver, which runs ISPConfig (https://www.ispconfig.org/) under Debian. Monit is a OpenSource monitoring tool for Linux (see https://mmonit.com/monit/). Requirements I had the following requirements on the solution: monit should only be accessible from the server itself (localhost) monit should run under a special SSL-secured URL (not IP:PORT as […]

Rename multiple files on shell

To rename multiple files in the current folder, you can use the following command:

In this case, I had a bunch of files that I had to rename temporarily. They all started with Scheldon_ and had the fileending .xml. The snippets above first rename these files to Scheldon_SOMEWHAT.xml_bkp and then back to the original name Scheldon_SOMEWHAT.xml.

Mount ISO file under Ubuntu Linux

Today I had the challenge, that I wanted to copy a DVD and  play it with the VLC media player (http://www.videolan.org/vlc/index.html). Therefore I had to learn how to mount iso file(s) under Linux. In my case it was Ubuntu 16.04.1. (see also my article about how to get your Linux distribution and version). How to […]

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 […]