How do I install Bash >= 3.2.25 on Mac OS X 10.5.8?

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Homebrew is generally a bit nicer than MacPorts, as it doesn’t require lots of sudo action. Here’s an article that guided me to upgrading my install of bash: http://concisionandconcinnity.blogspot.com/2009/03/upgrade-bash-to-40-in-mac-os-x.html

As for steps:

  1. Install Homebrew from the docs on their homepage

  2. Install Git using Homebrew (optional, but nice to have a more up-to-date git)

    brew install git

  3. Now install bash:

    brew install bash

  4. Add this install of bash to the allowed shells list:

    echo '/usr/local/bin/bash' | sudo tee -a /etc/shells;
    • Homebrew installs things to /usr/local/Cellar/ by default, then symlinks any binaries to /usr/local/bin, so you’ve now got the latest bash sitting at /usr/local/bin/bash

  5. Finally, change your shell to use this new one:

    chsh -s /usr/local/bin/bash

  6. Open a new terminal window/tab, and run these commands to double-check your work:

    $ echo $SHELL
/usr/local/bin/bash
$ echo $BASH_VERSION
4.2.37(2)-release

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