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Wow. So obvious! And yet I totally failed to start the path with a &quot;/&quot;.<br />
<br />
Thank you very much!!
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Wow. So obvious! And yet I totally failed to start the path with a "/".

Thank you very much!!

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In an effort to learn more about using the command line on my MacBook, I downloaded and installed the &quot;friendly interactive shell&quot;, also know as fish (<a href="http://fishshell.com/" rel="ugc">http://fishshell.com/</a>).<br />
<br />
I followed the instructions in the following link:<br />
<a href="http://hints.macworld.com/article.php?story=20091102085612743" rel="ugc">http://hints.macworld.com/article.php?story=20091102085612743</a><br />
<br />
The last step in the above link is:<br />
&quot;Make fish the default shell. Append opt/local/bin/fish to the /etc/shells file. Then open the Accounts System Preferences panel, unlock it, Control-click on your account picture and select Advanced Options. Set the Login Shell to opt/local/bin/fish.&quot;<br />
<br />
However, it's not working. When I try to run Terminal, I'm getting the following error message:<br />
&quot;You are not authorized to run this application. The administrator has set your shell to an illegal value.&quot;<br />
<br />
How can I fix this?
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In an effort to learn more about using the command line on my MacBook, I downloaded and installed the "friendly interactive shell", also know as fish (http://fishshell.com/).

I followed the instructions in the following link:
http://hints.macworld.com/article.php?story=20091102085612743

The last step in the above link is:
"Make fish the default shell. Append opt/local/bin/fish to the /etc/shells file. Then open the Accounts System Preferences panel, unlock it, Control-click on your account picture and select Advanced Options. Set the Login Shell to opt/local/bin/fish."

However, it's not working. When I try to run Terminal, I'm getting the following error message:
"You are not authorized to run this application. The administrator has set your shell to an illegal value."

How can I fix this?

Unable to Run Alternate Shell in Mac OS X

Mac OS X is the desktop operating system from Apple Inc., found on Macintosh computers. OS X consists of a Mach/BSD-based kernel, operating system interfaces primarily based on FreeBSD and additional frameworks (written in C, C++ and Objective-C providing user interface and application-level services.

Mac OS X

Unix is a multitasking, multi-user computer operating system originally developed in 1969 at Bell Labs. Today, it is a modern OS with many commercial flavors and licensees, including FreeBSD, Hewlett-Packard’s UX, IBM AIX and Apple Mac OS-X. Apart from its command-line interface, most UNIX variations support the standardized X Window System for GUIs, with the exception of the Mac OS, which uses a proprietary system.