Welcome to decuser's blog

Topics on this blog include computing, retro-computing, operating systems, math, and whatever other technical subjects I happen to be exploring that I find interesting enough to take and share notes about.

Posts

Jul 21, 2020 unix vim
Turn off that pesky Visual Mode mouse integration in VIM
This is a note about how to kill that mouse craziness with vim.

If you're already in vim type : set mouse-=a

If you want it off all the time, edit your .vimrc and add
```
vi ~/.vimrc
set mouse-=a
```
Now you can select, copy, and paste using vim and your os's normal functionality.
Jul 21, 2020 unix freebsd
Setting up XDM on FreeBSD 12.1

A note about how I I got XDM working on my Thinkpad T430 in 2020. It's not difficult, but it's not common anymore.

XDM is the x display manager and provides login capability for unix systems. It is particularly useful for old-style window managers like TWM.
Aug 9, 2018 unix
Restoring Grub - dual boot FreeBSD and Linux

Note describing how to restore the grub bootloader after it is catastrophically removed. Please note that it may be specific to my setup:
Jul 27, 2018 unix freebsd
How to set up tor on FreeBSD 11.2

A note describing how to install and set up the tor browser on freebsd 11.2
Apr 21, 2018 unix linux mint
Linux Mint Note

A note with fixes for issues arising with the use of linux mint.
Mar 6, 2018 unix linux centos
Installing Centos 5.11 with-2.6.17.8 kernel

A note describing the process of installing Centos 5.11 with the 2.6.17.8 kernel in order to be able to work along with Kroah-Hartman's 2007 book, Linux Kernel in a Nutshell, in the modern era.
Mar 4, 2018 unix linux centos
Installing Centos 5.11 with 2.6.18-kernel

A note describing the process of installing Centos 5.11 with 2.6.18-kernel in order to be able to work along with Kroah-Hartman's 2007 book, Linux Kernel in a Nutshell, in the modern era.
Mar 3, 2018 unix linux centos
Installing Centos 4.8 with 2.6.11 Kernel

A note describing the process of installing Centos 4.8 with 2.6.11 Kernel in order to be able to work along with Bovet & Cesati's 2006 book, Understanding the Linux Kernel, 3rd. ed., in the modern era.
Mar 2, 2018 unix linux centos
Installing Centos 6.9 with 2.6.34 Kernel

A note describing the process of installing Centos 6.9 with 2.6.34 Kernel in order to be able to work along with Robert Love's 2010 book, Linux Kernel Development, 3rd. ed., in the modern era.
Jan 14, 2018 math algebra
Algebra of sets

A note about the algebra of sets. This note informs [Boolean Algebra Notes (Jan 4, 2018)]({% post_url 2018-01-04-boolean-algebra-notes %}). The algebra of sets is a somewhat intuitive boolean algebra and it was the study of the algebra of sets that helped me better understand boolean algebra. I was introduced to the idea in NAVEDTRA, but this development is based solely on Whitesitt (1961).