Resizing linux boot partition
Friday, October 25, 2019
You have installed your linux using reasonable defaults. This means, you might have a
EFI partition, a boot partition and all the remaining space is used for a big encrypted
partition (LUKS - Linux Unified Key Setup), which hosts a physical volume to be used by
LVM (logical volume manager). Since you need to be able to unlock this
encrypted partition before using, this is done in the initial ram disk stored on the
boot partition, which is not encrypted.
Creating a reusable debian usb install flash drive
Sunday, September 22, 2019
If you want to install Debian on a new computer, you
will need to boot the installer first. A convenient way is to download a CD image
and write it to the flash drive, as described in Debian’s FAQ How do I write a CD/DVD/BD image to a USB flash drive. Usually a simple copy (
sudo cp debian-testing-amd64-DVD-1.iso /dev/sda) will do.
Cable Internet - Part 2: VoIP
Saturday, August 17, 2019
It seems to be common practice, that the hardware router, that you get from your ISP
runs a branded firmware which restricts certain configuration options - most important, you
can’t simply configure your VoIP phone connection. This is probably, because the ISP offers you
also phone services and he wants to ensure, that you his and only his phone service.
Cable internet - Part 1: Installation
Sunday, July 28, 2019
I recently order cable internet, since the provider offers for almost the same price as
the DSL provider better speed. I’ve also read, that the cable provider deployed already
IPv6 in my region. So - good to go.
Sending Emails with SMTP
Sunday, June 30, 2019
After setting up an email server, one way to test it, is connecting directly to port 25 (SMTP) and talking
to the server. Unlike in Simple dummy Mail Server for development in this
post, we’ll only use
telnet. Or we could also use netcat, also known
as the “Swiss Army Knife” of network tools.