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#!/bin/bash              
# Get the simulated key 
KEY=$1                   
#print variable on a screen
echo "Send heardware key '$KEY'"
                         
case "$OSTYPE" in        
  darwin*)               
    echo "OSX"           
    # osascript -e 'tell application System Events" to key code 0'
    # osascript -e 'tell application "System Events" to keystroke "a"'
    osascript -e 'tell application "System Events" to keystroke "'$KEY'"'
    ;;                   
  linux*)                
    echo "LINUX"         
    # Rely on 'xdotool':                                                                                                                      
    #   You should install it by 'sudo apt-get install xdotool'
    xdotool key $KEY       
    ;;                   
  solaris*) echo "SOLARIS" ;;
  bsd*)     echo "BSD" ;;
  *)        echo "unknown: $OSTYPE" ;;
esac