I prefer the file test operators to opening the file and reading from it to stop a daemon. It is probably faster and it is easyer to understand. 
until (-e "off.txt") { #change -e to -s to behave like George's code
    #code here
    sleep 5;
}

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In reply to Re: Re: Persistence by Ven'Tatsu
in thread Best way to make a script run persistently (daemon) by Dalin

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