You don’t need to be defensive about this. I’m just sharing my experience, I’m not trying to insult Debian or it’s maintainers. And yes I believe anything can happen considering the crazy bugs I have seen get shipped. Windows wiping One Drive files, multiple Steam bugs on Linux that can wipe your system, etc. Or it may be my choices during install, but it is still unusual compared to all of my Ubuntu installs.
Anyway, I took another shot at it and it still happened. I downloaded the 12.4.0 net install that is on the front page of debian.org. Installed two different times in Virtualbox, once using the graphical and once using the CLI install, using two different mirrors. I unchecked Gnome and ticked LXDE during installation (as I did before), because that is the DE I wanted. I would hope that would not change bashrc settings. Tried sudoing and got the exact same error. https://i.imgur.com/dhFnLgc.png
Here’s the generated .bashrc which I have not touched.
.bashrc`# ~/.bashrc: executed by bash(1) for non-login shells. # see /usr/share/doc/bash/examples/startup-files (in the package bash-doc) # for examples # If not running interactively, don’t do anything case $- in i) ;; ) return;; esac # don’t put duplicate lines or lines starting with space in the history. # See bash(1) for more options HISTCONTROL=ignoreboth # append to the history file, don’t overwrite it shopt -s histappend # for setting history length see HISTSIZE and HISTFILESIZE in bash(1) HISTSIZE=1000 HISTFILESIZE=2000 # check the window size after each command and, if necessary, # update the values of LINES and COLUMNS. shopt -s checkwinsize # If set, the pattern “**” used in a pathname expansion context will # match all files and zero or more directories and subdirectories. #shopt -s globstar # make less more friendly for non-text input files, see lesspipe(1) #[ -x /usr/bin/lesspipe ] && eval “$(SHELL=/bin/sh lesspipe)” # set variable identifying the chroot you work in (used in the prompt below) if [ -z “${debian_chroot:-}” ] && [ -r /etc/debian_chroot ]; then debian_chroot=$(cat /etc/debian_chroot) fi # set a fancy prompt (non-color, unless we know we “want” color) case “$TERM” in xterm-color|-256color) color_prompt=yes;; esac # uncomment for a colored prompt, if the terminal has the capability; turned # off by default to not distract the user: the focus in a terminal window # should be on the output of commands, not on the prompt #force_color_prompt=yes if [ -n “$force_color_prompt” ]; then if [ -x /usr/bin/tput ] && tput setaf 1 >&/dev/null; then # We have color support; assume it’s compliant with Ecma-48 # (ISO/IEC-6429). (Lack of such support is extremely rare, and such # a case would tend to support setf rather than setaf.) color_prompt=yes else color_prompt= fi fi if [ “$color_prompt” = yes ]; then PS1=‘${debian_chroot:+($debian_chroot)}[