Bash config Tweaks
The following is a collection of handy configuration Tweaks to the bash shell. I have found each one of these options to be useful over the last decade or so.
I would recommend you add them one by one to see what best suits your workflow.
# Navigate bash prompt using VIM style navigation
set -o vi
# Create an alias for ls (to always show listings in a list with human-readable file sizes.)
alias ls="ls -hl --color=auto"
Adding a new sudo user
usermod -aG sudo <username>
Grant SSH access using certificates
sudo su <username>
vim ~/.ssh/authorized_keys # paste public key.
chmod 600 ~/.ssh/authorized_keys