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7.0

Help with shell script indirect variables

Asked by TwentyFourSeven in Linux Programming, Bourne Shell (sh), Bourne-Again Shell (bash)

Hi,

I'm having difficulty getting my head around indirect variables.

My goal in the code below is to set the "prog_mode" variable based upon the case test outcome.

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             #!/bin/sh 
echo_bin="/bin/echo"
prog_mode="" 
## YES_NO_INDIRECT 
yes_no_indirect()
{
	# Parameter 1 is the question
	# Parameter 2 is the indirect variable name
while true
	do
	$echo_bin "${1} (y/n)"
	read yesno
	case $yesno in
		Y|y)
			${!2}="TRUE"
			break
			;;
		N|n)
			${!2}="FALSE"
			break
			;;
		*)
			$echo_bin "Invalid selection."
		esac
done
} 
## MAIN
yes_no_indirect "some question here...." "prog_mode"
echo $prog_mode
           
         

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Help with shell script indirect variables

Asked by TwentyFourSeven in Linux Programming, Bourne Shell (sh), Bourne-Again Shell (bash)

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