Install Bash Completion for Mac OS-X

May 22, 2016  |  No Comments  |  by Raj (MagePsycho)  |  Linux, Mac OS-X

One of the nicest features of the modern shell is the built in “completion” support. This allows you to complete commands and their arguments easily without memorizing.

Unfortunately, Mac OS-X bash shell doesn’t have completion feature by default unlike Ubuntu(Debian based Linux OS).
But the good thing is you can easily install the auto completion by using Homebrew or Macports.

Homebrew being my favourite packaging tool for OS-X, I will be explaining the installation using this tool.

Bash Completion Installation

1. Install bash-completion package using brew

brew install bash-completion

Brew Bash Completion

2. Edit the ~/.bash_profile

vi ~/.bash_profile

And add the following code:

if [ -f $(brew --prefix)/etc/bash_completion ]; then
    . $(brew --prefix)/etc/bash_completion
fi

3. Reload the bash shell

source ~/.bash_profile

Now try to type few letters of command and press [TAB], you will see the auto-completed command or auto-suggested commands(for more than one matches). For example:
nets[TAB] ->

netstat

net[TAB] ->

net-server               net-server5.18           net-snmp-config
net-server5.16           net-snmp-cert            net-snmp-create-v3-user

Bonus

You can also install additional completions from Homebrew-Completions
All you have to do is:

brew tap homebrew/completions
brew install <formula>

If you know how to create bash completions, you can create your own file and drop in the folder:

/usr/local/etc/bash_completion.d

After sourcing(loading) it, your custom completion is ready to take into account.

Please do share/comment on your favourite bash-completion.

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About Raj (MagePsycho)

Raj, the guy behind MagePsycho is a Zend PHP5 Certified Engineer, Magento Certified Developer, Magento Moderator / Freelancer with specialization in web applications (CMS, E-Commerce, ERP etc.). Catch him on: Twitter: @magepsycho Skype: magentopycho