# requirements su – root apt update # has the convert command apt install imagemagick vim /scripts/create_thumbs.sh #!/bin/bash THUMBS_FOLDER=/path/to/images/thumbnails for file in /path/to/images/* do # next line checks the mime-type of the file IMAGE_TYPE=`file –mime-type -b “$file” | awk -F’/’ […]
this script is suppsed to be started in a folder full of images that need sorting. (it is even possible to ssh -X into a machine and do this remotely) # requirements su – root apt update # install simple […]
sometimes one want’s to lock they keyboard against any hacking attempts by the baby, while watching documentaries about animals su – root apt update apt install xtrlock # test it bash -c “sleep 1 && xtrlock” # when the mouse […]
the specs CPU Allwinner A20,32 Bit Cortex™-A7 2-Core 1G GPU ARM® Mali400MP2 -> get the GPU going SDRAM 1GB DDR3 (shared with GPU) 432Mhz Storage “SD Card up to 64GB (SDXC) 1 SATA up to 2TB “ Network 4x Gigabit […]
the most fundamental networking settings are ever changing it used to be /etc/resolv.conf where nameservers are set systemd is doing it’s own thing /etc/systemd/resolved.conf and Ubuntu (based on Debian) is doing (again) it’s entirely own thing (netplan) frankly: this sucks […]
nfs is to GNU-Linux what smb is to Windows: sharing dirs & files “The Network File System (NFS) was developed to allow machines to mount a disk partition on a remote machine as if it were a local disk. It […]
remember that discussion about ever changing non-standard ways of defining network interfaces and ip addresses under /etc/network… well guess what, canonical just came up with a completely new config file format X-D (guess, everything is a yaml.yml now) hostnamectl; # […]
let’s say: in theory – it works – in practice vmware and kvm (RedHat) would REALLY have to work together to make this work for real. in reality – there are (currently) massive sata harddisk driver problems between esxi 6.7 […]
first off the praise: kvm-qemu is a high performance nicely scriptable virtualization system if it works, it can do pretty things 🙂 IN CONTRAST TO iESXI SH** WARE CLONING A VM IS A EASY AS: virt-clone –original debian12 –name debian12-clone […]
a bit of a warning: the NAT fowarding script is a bit of hardcore kvm “hack” that might not work (kvm is under development), wish to kvm and virsh-manager developers: please please integrate an easy way (like in virtualbox) for […]
how to setup kvm on Debian: hostnamectl; # tested on Static hostname: lenovo Operating System: Debian GNU/Linux 10 (buster) Kernel: Linux 4.19.0-17-amd64 Architecture: x86-64 hostnamectl; # also on Operating System: Debian GNU/Linux 12 (bookworm) Kernel: Linux 6.1.0-17-amd64 # with virsh […]
updates are a bless (fixes to problems, keep system secure from hackerz) but also a curse (it might break things) on systems that follow the UNIX K.I.S.S principle, they should “just work”, to the extreme of (kernel) live patching (currently […]
no man is a island. ALWAYS say something positive first: what went right? THEN start what should be better NOBODY will be de-motivated sometimes inter-human interaction and cooperation and communication in text and beyond are necessary. also (of course) great […]
update: join me @ online-coworking-space.com https://play.workadventu.re/@/online/coworking/space.com first of: the online conferecing as RPG game format is really fun and innovative idea to make online events more fun! 🙂 (it is accompanied by live streams via vimeo or youtube) Corona will […]
hostnamectl; # tested on Static hostname: giada Icon name: computer-desktop Chassis: desktop Operating System: Debian GNU/Linux 10 (buster) Kernel: Linux 4.19.0-17-amd64 Architecture: x86-64 su – root apt update # will install Java Web Start and openjdk-11-jre apt install icedtea-netx java-common […]
CentOS 7 (maintained until 2024) is hailed a rock-solid GNU Linux Open Source (?) server OS, hardened by many idelaistic developers & RedHat technicians. …and indeed it performed well on it’s xfs filesystem (thanks all involved also thanks to RedHat […]
short story: phase it out So it finally happened, Oracle wants to cash in on it’s $7.4 Billion investment it made in 2009. The non-Open-Source non-GPL non-Free-Software-coffee has officially gone sour. One can just pray, that this will be a […]
long story… good alternative? https://minidvblinux.de/ having had various frustrating experiences with the topic: TV + PC (even tried a cheap DreamBox 520 HD from eBay… which are probably good devices, but this one turned out to be faulty/unstable) now… in […]
details on the latest SanDisk Ultra 3.2Gen1 32GBytes stick Why this stick and not 1:1 dd copy a Debian (or other) Live iso on the stick? (Debian even provides Live.iso with a bunch of different desktops to chose from #NOICE!) […]
# edit this config vim /etc/yum.repos.d/CentOS-Linux-PowerTools.repo enabled=0 -> 1 # write & quit # perform package def update yum update # there it is 🙂 dnf list \*sshfs\* Last metadata expiration check: 0:00:13 ago on Wed 24 Feb 2021 12:46:49 […]
it is remarkable, that even the most simple tool, like exiftool seems to have (had?) a serious security problem: “Improper neutralization of user data in the DjVu file format in ExifTool versions 7.44 and up allows arbitrary code execution when […]
some gui programs like gparted (very nice harddisk partitioning program) won’t start as root. hostnamectl; # tested on Operating System: Debian GNU/Linux 10 (buster) Kernel: Linux 4.19.0-13-amd64 Architecture: x86-64 su – root; # become root gvim; # fails with E233: […]
this script is for cront-job regular measurement of the available (download) bandwidth, by downloading a 100MByte dd crated (https://dwaves.de/testfile) testfile created like this (creditz): head -c 100m /dev/zero | openssl enc -aes-128-cbc -pass pass:”$(head -c 20 /dev/urandom | base64)” > […]
BACKGROUND INFO: how does kvm use qemu? KVM (Kernel-based Virtual Machine) is a virtualization solution for Linux on x86 hardware. It allows running multiple virtual machines (VMs) on a GNU Linux host by leveraging hardware virtualization extensions such as Intel […]
ffmpeg / avconv is pretty nice. it can even do mp4 to gif conversion! 🙂 so what the user can do is: use SimpleScreenRecorder, to record a fixed rectangle of the screen to mp4 and then use ffmpeg / avconv […]
Music and GNU Linux – back to vlc after mocp jajuk testing mocp –version This is : Music On Console Version : 2.6-alpha3 Built : Nov 27 2016 10:55:04 Compiled with : OSS ALSA JACK DEBUG Network streams resample Running […]
today installed (1:1 copy with USB2IDE Adapter) Debian 8 32Bit aka ideal linux on Compaq “Evo D500” and: IT JUST WORKS 🙂 works slow but it works (it is a Single Core Celeron, what do users expect?) X-D 512 MB […]
postgres borrows concepts from mysql (now mariadb) postgres and mariadb are borth great databases, thanks all involved. (how to setup postgres 12 on centos 8 (very very latest)) let’s dive into hit: how to postgres: hostnamectl; # tested on Virtualization: […]
apt update apt upgrade is what users do… having no idea of the “heart attack” momentum that is awaiting them X-D after a reboot… and 1min 30sec timeout, the dreaded Control+D give root password prompt appears. “Houston we have a […]
setup LAMP GNU-Linux Apache2 MariaDB PHP7.3 su – root; # become root apt update; # update system to latest apt upgrade; # database first apt install mariadb-server mariadb-client # set root pwd for database (can be root on dev test […]