Dimlo powershell do while loop burp.

darkgen · 14 Dec 2017 at 13:27

Being a being a bit of a cack-handed thicko here with a do loop with two conditions.

Code:

        $Timer = get-Date
        do
        {
        
        $Codeexecutedsuccessfully = 0
        <CODEBLOCK>
        $Codeexecutedsuccessfully = 1

        }
        while (((Get-Date).AddMinutes(-1) -le $Timer) -or ($Codeexecutedsuccessfully -eq 0))

My expectation is that the loop will break if either condition becomes false. However, the second condition is seemingly never met and the codeblock simply repeats for 60 seconds and meets the first condition.

ta, Paul.

GravyMonster · 15 Dec 2017 at 09:47

If you want this to break if any condition is false, you need an 'and' not an 'or'

darkgen · 15 Dec 2017 at 11:18

Ahh; theres be thinking -AND would require that BOTH conditions were false for the loop to break. Hmm ok, thanks.

Dj_Jestar · 17 Dec 2017 at 11:32

The opposite. Both conditions must be true for the loop to continue looping. It is "while" after all.

If you really dumb it down and do/think of it like this:

Code:

do {
    write "hello"
} while($TRUE -AND $FALSE)

vs

Code:

do {
    write "hello"
} while($TRUE -AND $TRUE)

You will see the difference very easily.