Updating Bash profile on Amazon AWS Ubuntu Instance

It looks like we do not have customized .bashrc files on the AWS instance of Ubuntu.  Instead, you can create a customized script to setup your defaults.

Refer: https://serverfault.com/questions/491585/is-there-a-global-bash-profile-for-all-users-on-a-system
Refer: https://bash.cyberciti.biz/guide//etc/profile.d

sudo su -
nano /etc/profile.d/mlr.sh

Sample Content
PS1="\n# ${USER}@${HOSTNAME}\n# \${PWD}\n$ "
alias ll='ls -l' 2>/dev/null
alias l.='ls -d .*' 2>/dev/null

AWS Setup for Bash

Refer:  https://www.crmarsh.com/aws/

To have your account use bash, you need to update your account:

$ sudo vi /etc/passwd

You will need at the end - ::/home/mruckman:/bin/bash

This is both your home directory and also the :/bin/bash says to use bash