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Upgrade bash on OSX
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upgrade-osx-mac-bash.md

Upgrade bash on OSX

Due to GPL limitations, OSX ships with bash v3.2.57. As of writing this the current version is bash v5.0.2. bash v4 and beyond support unicode characters, and much more.

Check current bash version with:

echo $BASH_VERSION

To upgrade use Homebrew

brew install bash

Add new bash to list of approved shells:

sudo nano /etc/shells

Add this line to the top of the list:

/usr/local/bin/bash

Change the shell to use the new version:

chsh -s /usr/local/bin/bash

Change bash scripts from using this at the top:

#!/bin/bash

To use the newest version:

#!/usr/bin/env bash

Open a new terminal window and test you're using the latest version:

echo $BASH_VERSION

For more information, see also: Upgrade to bash 4 in Mac OS X

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