Install and set bash as default shell with chsh command on FreeBSD.

1.) Install binary:

# pkg_add -r -v bash

 or

Install port:

# portinstall bash



2.) Find bash path:

$ which bash

Output:

/usr/local/bin/bash



3.) Set user shell to bash:

# chsh -s /usr/local/bin/bash monsterb



4.) Set root shell to bash:

# chsh -s /usr/local/bin/bash root