[Steven Danna](https://github.com/stevendanna/knife-hacks) has written the best `knife` bash completion script that I’ve seen for use with managing chef servers and the chef software by opscode.
Update: Steven has now made an update so this is working!
There was always one little thing wrong with it though:
> knife environment edit (etc) would not autocomplete – it would give an error
The error was:
-bash: _chef_environments: command not found
The solution is pretty simple – you just need to edit the script and transpose two letters that were a typo from the [knife_completion.sh](https://github.com/stevendanna/knife-hacks/blob/master/shell/knife_completion.sh) file:
_chef_environemnts
should actually be:
_chef_environments
The difference is hard to spot but it’s key.
Two other scripts for knife completion (that I don’t like as much) are [this one by avishai-ish-shalom](https://gist.github.com/avishai-ish-shalom/1050685) and [a spinoff by vindimy](https://github.com/vindimy/dotfiles/blob/master/bash-completion/knife.sh) – I think they are slower and not as user friendly.
If you use `zsh` instead of `bash` there is also a [zsh knife](https://github.com/robbyrussell/oh-my-zsh/tree/master/plugins/knife) plugin which is part of `oh-my-zsh` that seems pretty good.
