Category: Linux Global

Ubuntu: Create USB Live System Stick for Live Mode or Emergency Help

For all Users, especially Newbies its VERY helpful to have a Rescue System on a USB Stick if a Major Update/Release Change fails or break the System. To this the Ubuntu-ON-RAM Live System is very useful at public shared PCs for Online Banking etc., cause after every reboot all old Firefox Data are safe deleted!! How to create this VERY helpful Tool Stick for free? All you need is the latest Ubuntu-ISO file (AMD64-15.04 – 64bit) a new 4/8GB USB Stick (take a good Brand! to get a high quality tool). Howto: Burn the ISO to DVD/CD (NON-Linux-PC) Boot your […]

Security: Webserver HTTPS with Self Signed Certificate Do it yourself in 5 Minutes!!

Today the Point of Security and encrypted Webserver Communication is rolling over every User who hosts own Websites on the Internet. Last decades HTTPS was only used by Online Login Pages like Shops and Banks to verify the Communication between a User PC and the Website. But after January 2015 the most Search Engines like google decides to force index of Websites with HTTPS Protocol. The Background is that a TLS encrypted Connection isn’t easy to track and to force “drive-by-load-Viruses” to the Website Visitors. But a lot of Webmasters of the Opensource Community were angry about this handling. Thats […]

Raspberry Pi: Howto build a Local Network Monitor for Intrusion Logging Watchdog

Today the count of network devices at home networks grows up weekly, cause more and more home devices like freezers, coffee engines, dishwasher and more got builtin wifi interfaces. To have a Control Unit you can use a raspberry pi2 as cheap Network Monitor Logger. The Raspian by default offers builtin free tools, like arp, arp-scan, nmap, ping to easy monitor a network. If you have learned some commands and the bash scripting you can fast create a Network Logger, perhaps with analyse tools to mail alerts if new “MAC” NIC Adresses are seen. Every network device uses a owned […]

Ubuntu Vivid: Things you should change after fresh setup

If you Setup Ubuntu 15.XX on a PC there are a few things to change: open a Gnome Terminal an run (# Comments): $sudo apt-get update && apt-get dist-upgrade #Pull Updates $sudo adduser CrazY12U$ERNAME # Create a crazy Username (Standarduser, no sudo, no lpadmin) for daily work! to prevent social engineering Hacks $sudo chmod 700 /home/* # to prevent that other users look into each other homes! (check root home to “ls -l /root) $sudo passwd root # SET long Password (min.15 digits) for the root User to prevent PC recovery Console Access without Password!!! Keep Password save! $sudo apt-get […]

Ubuntu: Recover Data from old Luks Encrypted HDD to new HDD

If you prefer to use encrypted Devices you ran into a problem if you try to move, migrate or recover the files from the old luks protected home. As normal User you should know that luks is used with LVM2 Logicial Volume Manager, which manages the partitions “named based”. Major Info! Ubuntu prename the volume group with the Setup-DVD all time to the same VG_NAME called “ubuntu-vg”!!! So what do you need to migrate or recover? Download the ubuntu DVD and burn it to a disc Insert the new HDD to the Sata1 Port Plugin the ubuntu DVD for Setup […]

Ubuntu: Advantage of Classic Desktop Openbox

I am often asked what is the best Desktop Software for Linux? a good Desktop must be fast by window handling, easy to read and needs less hardware resources the fonts must be clear and easy to read animations should not break the operations, glossy windows should by easy to switch off a taskbar should always show you which apps are active and opened a taskbar should not group icons! a progam menu should open fast and should wait for user interactions, special for newbies or older people! a good Desktop Software should not force you to the need of […]

Debian Ubuntu Laptop mods for SSD HDD and a full encrypted with luks

Major INFO 06-2015: Do not set tmpfs on ubuntu 15.XX or Systems with systemd!!! This block PC boot !! If you want to setup a Ubuntu/Debian Laptop with a full encrypted HDD use a “alternate” CD/DVD. After Setup you have to change some little Parameters to extend the lifecycle of the SSD Chips disable Swap if you have more than 4GB Ram enable a RAMDISK with tmpfs for logs, caches of Browsers install cpufrequtils for CPU freqscaling install laptop-mode-tools to set powersave mode for hardware modules install xbacklight to reduce backlight energy Steps: open a Console and change to root […]

Linux Tip: Split Console Screen on Widescreen Laptop / PCs with “screen” and “terminator”

Current Laptops / PCs uses 16:9 Widescreen Displays and if you dont want to use Xorg (Gnome,unity,Openbox Desktops) you can use on Linux Console the program called “screen” it offers: – Split Consoles horizontally and vertically – disconnect the screen and let the scripts/commands active on remote Systems – reconnect if the remote Session was broken cause network problems On Gnome or unity you can use “terminator” see: – manpage of screen – http://unix.stackexchange.com/questions/7453/how-to-split-the-terminal-into-more-than-one-view

Linux Info: UEFI + GPT + Secure Boot = Dongled OS = Printing Dollars

UEFI+GPT+dongled OS = Printing endles Dollars for PC Manufacter and ┬áM$.   UEFI was offered for “security reasons” but in my opinion the normal users should be┬áprevented by this “UEFI LOCK” to use Dual Boot or remove Windows on owned hardware, in cases of Mainboard failures the Users are forced to buy new Mainboards with OS-Key. Legacy Mode on Bios will disappear in the next generation of PCs than every OS is “dongled” to Hardware like MacOS to their Products…  

Linux: 46″ inch Weatherstation Display with Thinclient PC and Linux OS

With Tiny Core Linux: 46″ inch Weatherstation Display with FSC S500 Thinclient PC and Linux OS connected via DVI-D to HDMI Cable Awesome to see Satellite Images in HDTV Resolution and Full Color all developed by me. www.linuxonlinehelp.de YOU NEED NOT to buy a “SmartTV” of Samsung cause the Thinchlient uses open Linux and offers 300% more Performance on Websurfing! No Apps needed no App-Store needed, priceless for free… All You need: – TV with Full HD and HDMI – A DVI-D to HDMI Adapter Cable – ThinClient S500 cheap used on net – Linux, i prefer Tinycorelinux cause 100% […]

Debian Linux Wheezy: Partitioning 3TB Hard Drives with GPT Table (fdisk show 2TB max.)

Problem: On Debian Linux the brand new 3TB SATA Drives only seen as 2TB Drives by fdisk Background: GPT Partition Table must be used as new technology Solution: install “gdisk” the GPT Tool for big Drives with #sudo aptitude install gdisk clean the new Drives first Table Headers with #sudo dd if=/dev/zero of=/dev/sdb count=1 bs=512 run now #sudo sgdisk /dev/sdb Command is “sgdisk” not “gdisk” = its Paket Name same on other Linux/BSD Systems on Windows use Paragon Tools

Hardware Bugs: Seagate ST3000DM001 9YN166 3TB Drives Click Noise

Problem: My brand new Seagate Drives running as Raid1 with two Seagate ST3000DM001-9YN166 on Debian clicks sometimes. Background: Noise is made by parking heads and spin control by the firmware, often seen on Home NAS (Update 2017: The Firmware of this Generation is buggy, Fault rate 70% after 2 Years) Solution: go to Manufacter Site and download the firmware update iso burn it to CD reboot the PC on this CD, using Freedos and the Update tool update the firmware and reboot to Linux again edit with sudo vi /etc/rc.conf /sbin/hdparm -W 0 /dev/sda #Systemdrive disable Cache against Powerloss! /sbin/hdparm […]