Terminal Not Working After Yosimite Installation

I installed Yosimite now and after the installation the terminal is not working. It used to work before, but after installation of new MAC OS X on Mavericks (old MAC OS X). Can anyone help me with this?

If I open the terminal this message is showed:

Last login: Sun Dec 28 00:42:15 on ttys000
login: /usr/local/bin/bash: No such file or directory

[Process completed]