Pissed at your Linux administrator because they gave you the Bourne shell as your default? Tired of type “bash” after every login? Use this technique to change your shell to Bash.
Modify, or create, a .profile file in your home directory
prompt> mkdir -p ~/.profile
And place this statement as the last line in your .profile
SHELL=/bin/bash exec /bin/bash –login
You should be able to bash with no effort at all now.
The info in this post is pulled from this page.
P.S. This should apply to any other shell supported on your system as well