Add x spacers to your Dock in Mac OS X (./add_spacer.sh x)

add_spacer.sh

#!/bin/bash 
function add_spacer {
  [[ $1 =~ ^[0-9]+$ ]] && times=$1 || times=1

  echo "Adding $times spacer(s)"

  i=0;
  while [[ $i -lt $times ]]; do
    defaults write com.apple.dock persistent-apps -array-add '{tile-data={}; tile-type="spacer-tile";}'
    ((i++))
  done

  echo "Killing Dock..."
  sleep 2 # Wait for something or other or the spacers won't appear
  killall Dock
}
add_spacer $1

Installation instructions:

• git clone https://gist.github.com/593a927aab9b1be6249b.git
• mv 593a927aab9b1be6249b/add_spacer.sh /usr/local/bin/add_spacer
• chmod +x /usr/local/bin/add_spacer