When you get a new Macbook Pro with M1 chip you get an old version of Bash.

Bash isn’t old. It’s still being maintained. It has millions of Linux and Windows users. Here’s how to put the newest version of Bash back inside your MacOS box.

Prerequisite: Install Homebrew. (Install iTerm2 for good measure.)

Install Bash and the bare minimum of things things you would expect it to have:

brew install bash bash-completion lesspipe 

Verify that it’s installed:

which -a bash

Add it to your /etc/shells file:

sudo nano /etc/shells

Change your default shell to the new Bash:

chsh -s /opt/homebrew/bin/bash

Create a .profile and .bashrc that resembles what you would see in Ubuntu 22.04’s /etc/skel folder:

# Forked from the Ubuntu 22.04 /etc/skel folder

# 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

# 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='\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '
    alias ls='ls --color=auto'
    alias grep='grep --color=auto'
    alias fgrep='fgrep --color=auto'
    alias egrep='egrep --color=auto'
else
    PS1='\u@\h:\w\$ '
fi
unset color_prompt force_color_prompt

# colored GCC warnings and errors
export GCC_COLORS='error=01;31:warning=01;35:note=01;36:caret=01;32:locus=01:quote=01'

# some more ls aliases
alias ll='ls -alF'
alias la='ls -A'
alias l='ls -CF'

# Add an "alert" alias for long running commands.  Use like so:
#   sleep 10; alert
alias alert='notify-send --urgency=low -i "$([ $? = 0 ] && echo terminal || echo error)" "$(history|tail -n1|sed -e '\''s/^\s*[0-9]\+\s*//;s/[;&|]\s*alert$//'\'')"'

# Alias definitions.
if [ -f ~/.bash_aliases ]; then
    . ~/.bash_aliases
fi

# Lesspipe
export LESSOPEN="|$(brew --prefix)/bin/lesspipe.sh %s"

# Bash Completion
[[ -r "$(brew --prefix)/etc/profile.d/bash_completion.sh" ]] && . "$(brew --prefix)/etc/profile.d/bash_completion.sh"

# This file is used by bash, installed by homebrew in /opt/homebrew/bin/bash

eval "$(/opt/homebrew/bin/brew shellenv)"

# The rest is forked from the Ubuntu 22.04 /etc/skel folder

# if running bash
if [ -n "$BASH_VERSION" ]; then
    # include .bashrc if it exists
    if [ -f "$HOME/.bashrc" ]; then
	. "$HOME/.bashrc"
    fi
fi

# set PATH so it includes user's private bin if it exists
if [ -d "$HOME/bin" ] ; then
    PATH="$HOME/bin:$PATH"
fi

# set PATH so it includes user's private bin if it exists
if [ -d "$HOME/.local/bin" ] ; then

From here, create your .bash_aliases and make all the other adjustments you’ve been doing since 1989… Bash not dead!