10 lines
		
	
	
		
			200 B
		
	
	
	
		
			Bash
		
	
	
	
	
	
			
		
		
	
	
			10 lines
		
	
	
		
			200 B
		
	
	
	
		
			Bash
		
	
	
	
	
	
#!/bin/bash
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_prompt_command_add() {
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    if [ -n "$1" ] && [[ ":$PROMPT_COMMAND:" != *":$1:"* ]]; then
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        PROMPT_COMMAND="${PROMPT_COMMAND:+"$PROMPT_COMMAND;"}$1"
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    fi
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}
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export PROMPT_COMMAND
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