From installing Drupal Console:
5) Take advantage of command autocomplete feature.
#Bash or Zsh: Add this line to your shell configuration file:
source “$HOME/.console/console.rc” 2>/dev/null
But it wasn’t working for me for some reason…
First, so, what’s this all mean? Well, basically you’re redirecting the application/command error output (stderr) to a black hole. In other words you don’t want any errors printed to the screen.
( > ) = output redirection
( 2 ) = STDERR
Standard In, out, and error Standard In is usually from the keyboard. Programs usually print to standard output and sometimes prints to standard error. 0, 1, 2 = STDIN, STDOUT, STDERR
source: http://www.xaprb.com/blog/2006/06/06/what-does-devnull-21-mean
In order to get the autocompletion to work, I added this command to my ~/.bash_profile. In the screenshot gif below you can see the command at the bottom of my ~/.bash_profile - for some reason it wasn’t working at the top of the file.
