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I've tried to switch my default shell to zsh, using chsh:
chsh -s /bin/zsh
and:
chsh -s `which zsh`
Both commands ended with:
Changing shell for adamatan.
Password for adamatan:
chsh: Operation is not supported by the directory node. Operation is not supported by the directory node.
chsh: no changes made
How can I change my default shell in OSX Lion?
Apple replaced bash with zsh as the default shell for new user accounts. See article.
You can verify the default shell by typing echo $0 in the terminal.
See Apple Support page, Use zsh as the default shell on your Mac
Surprisingly this doesn't work with the command line tools as one would expect. This needs to be done with the System Preferences app.
The following steps work with multiple versions of Mac OS X through at least 10.11 (El Capitan).
4. Change the "Login shell" value to /bin/zsh.
5. Press the OK button to save your change.
You should be careful not to change any other fields, as per the warning at the top of this dialog. If you have any doubts, then press the "Cancel" button and try again.
If you're joined to an Open Directory sever, or any other directory server, the default shell will have to be specified there.
In particular, if you're joined to a Microsoft Active Directory, you can use the Directory Utility to change the default shell, as described here.
You can always just add zsh to your bash profile so it gets called on logon as a workaround.
Just use command chsh -u username to edit your profile
In addition to the other answers, you may need to go to Terminal -> Preferences -> General and change "Shell opens with" to "Default login shell".
