RAM Check - With CD for dialogs

gistfile1.txt

#!/bin/bash

########################################################################
# Author:   Calum Hunter                                               #
# Date:     04/02/2016                                                 #
# Version:  0.1                                                        #
# Purpose:  Ensure we have atleast 4GB of RAM to play                  #
#                                                                      #
########################################################################     

# Get the RAM installed in this machine in gigabytes
installed_memory=$(hostinfo | awk -F ': ' '/memory/ {print $2}' | awk -F "." '{print $1}')
# Required minimum installed memory (in Gigabytes)
required_memory="4" 
# Path to Cocoa Dialog
CD="/Applications/cocoaDialog.app/Contents/MacOS/cocoaDialog"

display_insufficient_ram(){
not_enough_rams=($($CD msgbox --title "Warning!" --icon computer --text "Insufficient RAM Detected" --no-newline --informative-text "${required_memory}GB of RAM is required.

Only ${installed_memory}GB was detected as being installed in this machine.

If you feel this is in error, please contact IT Support." --button1 "Shutdown" ))

if [ "$not_enough_rams" = "1" ]; then
   shutdown -h now
fi
}

# Test to see if we have = to or greater than required_memory
if [ "$installed_memory" -lt "$required_memory" ]; then
    display_insufficient_ram    
fi 

exit 0