> locate "*/bash"
/usr/compat/linux/bin/bash
/usr/ports/shells/bash
> chsh -s /usr/compat/linux/bin/bash alucard
chsh: /usr/compat/linux/bin/bash: non-standard shell
> chsh -s /usr/ports/shells/bash alucard
chsh: /usr/ports/shells/bash: non-standard shell
> which bash
bash: Command not found.