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					|  |  |  |  | # Setup script environment | 
			
		
	
		
			
				
					|  |  |  |  | set -o errexit  #Exit immediately if a pipeline returns a non-zero status | 
			
		
	
		
			
				
					|  |  |  |  | set -o errtrace #Trap ERR from shell functions, command substitutions, and commands from subshell | 
			
		
	
		
			
				
					|  |  |  |  | #set -o errtrace #Trap ERR from shell functions, command substitutions, and commands from subshell | 
			
		
	
		
			
				
					|  |  |  |  | set -o nounset  #Treat unset variables as an error | 
			
		
	
		
			
				
					|  |  |  |  | set -o pipefail #Pipe will exit with last non-zero status if applicable | 
			
		
	
		
			
				
					|  |  |  |  | #set -o pipefail #Pipe will exit with last non-zero status if applicable | 
			
		
	
		
			
				
					|  |  |  |  | shopt -s expand_aliases | 
			
		
	
		
			
				
					|  |  |  |  | alias die='EXIT=$? LINE=$LINENO error_exit' | 
			
		
	
		
			
				
					|  |  |  |  | trap die ERR | 
			
		
	
	
		
			
				
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