Category: Debian

ntpd – when fundamentals fail

servers/clients/computers/programs/services/webservers need accurate time… they usually get it from time servers that have an atomic clock attached to their USB port. (just guessing) ping PING ( 56(84) bytes of data. 64 bytes from ( icmp_seq=1 ttl=46 time=43.5 […]

debian and cups rename printer

if you print from a laptop at home at at office, and it happens you have the same printer model here and there, you might to want to distinguish between them by name. # become root sudo bash # backup […]


Thanks! thanks to all the contributors of open source soft- and hardware and people that share their knowledge online for free 🙂 i hope/think that better technology could possibly also change humans to the better… freely sharing information surely does […]

Howto Wie man in Firefox und Thunderbird Neue und Alte Deutsche Rechtschreibprüfung aktiviert und Wörterbuch installiert

Firefox: einfach auf die Links klicken, dann auf “Add” to Firefox… und nochmal mit “OK” bestätigen. Neue Rechtschreibung: Alte Rechtschreibung: … jetzt kann man(n)/Frau auf jeden beliebigen Text eines Formulares R-Click und … sich nie wieder vertippen X-D […]


You can find the Debian version on which your Ubuntu version is based in the file: /etc/debian_version From 10.04 up to 17.04:    Ubuntu      |       Debian   18.04  bionic     buster  / sid   […]

Setup Bluetooth Headset under linux debian gnome2 mate desktop

preparations on terminal: detect your hardware: you can get old but well supported notebooks/laptops here like the dell latitude e4310 with this intel-spy-on-me wifi/bluetooth module on board: lshw |grep lue description: Bluetooth wireless interface product: DW375 Bluetooth Module capabilities: bluetooth […]


# yum based (fedora/redhat/centos) yum update –exclude=kernel* # apt based apt-mark hold package-name* # to unhold: apt-mark unhold package-name*

HowTo Update OpenOffice LibreOffice under Linux – deb rpm Debian Ubuntu RedHat Fedora CentOS7

updating LibreOffice (former OpenOffice) works like this: 1. remove the old version 2. download latest version 3. install the new version RedHat Fedora CentOS7: rpm based distributions: yum remove libreoffice*; # uninstall current version wget; # download tar […]

how to verify Debian ISO Image – BAD signature – how to sign a file – chain of trust – the problem with short key IDs

make sure you downloaded the SHA512SUMS.sign from the same directory as the iso. otherwise you will get BAD signature. steps to reproduce: # download the iso image with non-free drivers (yes it sucks non-free drivers are […]

apt yum exclude package from update upgrade

maybe you want to run your own version of the kernel and you will have to prevent during an automatic update that this kernel will get “replaced”. same goes with firefox, thunderbird and LibreOffice yum and apt might not install […]


tested on: hostnamectl Static hostname: DebianLaptop Icon name: computer-laptop Chassis: laptop Operating System: Debian GNU/Linux 8 (jessie) Kernel: Linux 3.16.0-4-686-pae Architecture: x86 i assume you have your laptop/pc LAN connected to a switch/router and your default network card is eth0. […]

Linux CentOS7 install mate and virtualbox guest additions

Update: as of 2019-01 and CentOS 7.6 the below setup may fail by now, for those reasons… BUT you CAN compile the latest kernel and all modules yourself (DON’T BE SHOCKED! YOU CAN DO IT! IT’S NOT ROCKET SIENCE!… just […]

VirtualBox under LinuxDebian – Hang Hung VM on Starting Virtual Machine

this applies to: VirtualBox Version 5.1.8 r111374 (Qt5.3.2) hostnamectl Static hostname: DebianWorkstation Operating System: Debian GNU/Linux 8 (jessie) Kernel: Linux 3.16.0-4-686-pae Architecture: x86 the VMs hangs on startup with this screen: Solution: kill the vm then disable audio device… the […]

Howto install and setup File Sharing Server with GNU Linux

ext3+gnu_linux+samba = fast and reliable fileserver. WARNING! Security problems Versions from Version 3.5.0 to 4.6.4 (recent in May 2017 ) are affected and need to be patched! patches are available from: Unfortunately EVEN Debian9 (!!!! GUYS FIX THAT FAST […]

debian9 stretch – basic web based ressource monitoring with collectd

checkout the tutorial: maybe cacti and co is too complicated and looks a little outdated… collectd might be just what you are looking for 🙂 “The main objective of this is to develop an easy to use and customizable […]


Init Ram Disk filesystem – kind of mini OS in order to mount raid and start “the real /root os”. hostnamectl; # tested on Static hostname: debian9 Icon name: computer-vm Chassis: vm Machine ID: 532eabca552b4075a8679094397c8dba Boot ID: 15ee0b8e8a1e4d1eb1003c4630644091 Virtualization: microsoft […]