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

• Jan 3, 2022 unix research-unix v7

  Installing and Using Research Unix Version 7 in the SIMH PDP-11/45 and 11/70 Emulators 2.0

  This is a completely reorganized, updated, and edited version of the document. It includes the following sections:

  • Installation
  • Create a user and set sane TTY options
  • Set up multi-session support
  • Miscellaneous

  It covers building a working v7 instance from tape files that will run on the SimH emulator. First, the reader will be led through the restoration of a pristine v7 instance from tape to disk. Next, the reader will be led through adding a regular user, making the system multi-user capable. Then, the reader will be shown how to make the system multi-session cable allowing multiple simultaneous sessions. Finally, the system will be put to use with hello world, DMR style, and the learn system will be enabled.

• Dec 30, 2021 unix research-unix v7

  Installing and Using Research Unix Version 7 in the SimH PDP-11/45 and 11/70 Emulators v1.7

  Revision 1.7 of Installing and Using Research Unix Version 7 in the SimH PDP-11/45 and 11/70 Emulators is out, get it here: research-unix-7-pdp11-45-v1.7.pdf

  Last Updated December 30, 2021

• Mar 23, 2021 unix freebsd videos

  freebsd 2021 ep 2 logging in and out
• Feb 21, 2021 unix vim

  Vim User Manual in txt and ps and pdf us-letter

  This note describes how to create a pdf (and ps, and txt) version of the latest Vim documentation. I got sick of trying to find a useable and current pdf on the web, so I just figured out how to do it from source and am posting the howto for others who might come after.

  This is current as of February 17, 2021.

• Feb 12, 2021 unix freebsd videos

  freebsd 2021 ep 1 installation
• Oct 26, 2020 unix macos

  An Open Letter to Apple and the Time Machine Bug

  Dear Apple,

  This morning, I had a row in your Apple Technical Support forums that I thought I should preserve.

• Sep 20, 2020 unix freebsd videos

  freebsd 2020 ep 7 all about manpages
• Sep 18, 2020 unix freebsd videos

  freebsd 2020 ep 6 system programming who command
• Sep 15, 2020 unix freebsd videos

  freebsd 2020 ep 5 playing with zfs and zfs snapshots
• Sep 13, 2020 unix freebsd videos

  freebsd 2020 ep 4 updating your freebsd 12.1 system safely with zfs boot environments