變量中的比較對象輸出

我正在構建一個腳本，將比較最後一次使用中的IPv4地址與所有可用的操作（從2到254）。變量中的比較對象輸出

我已經到目前爲止，我通過比較數組得到了一個結果，但我的最終結果也是一個數組，我似乎無法得到唯一的數字。

我的腳本：

$guestIP = @("192.168.31.200","192.168.31.31","192.168.31.90","192.168.31.25","192.168.31.100") 

$AllLastOcted = $("2","3","4","5","6","7","8","9","10","11","12","13","14","15","16","17","18","19","20","21","22","23","24","25","26","27","28","29","30","31","32","33","34","35","36","37","38","39","40","41","42","43","44","45","46","47","48","49","50","51","52","53","54","55","56","57","58","59","60","61","62","63","64","65","66","67","68","69","70","71","72","73","74","75","76","77","78","79","80","81","82","83","84","85","86","87","88","89","90","91","92","93","94","95","96","97","98","99","100","101","102","103","104","105","106","107","108","109","110","111","112","113","114","115","116","117","118","119","120","121","122","123","124","125","126","127","128","129","130","131","132","133","134","135","136","137","138","139","140","141","142","143","144","145","146","147","148","149","150","151","152","153","154","155","156","157","158","159","160","161","162","163","164","165","166","167","168","169","170","171","172","173","174","175","176","177","178","179","180","181","182","183","184","185","186","187","188","189","190","191","192","193","194","195","196","197","198","199","200","201","202","203","204","205","206","207","208","209","210","211","212","213","214","215","216","217","218","219","220","221","222","223","224","225","226","227","228","229","230","231","232","233","234","235","236","237","238","239","240","241","242","243","244","245","246","247","248","249","250","251","252","253","254") 

$guestIP = $guestIP | sort -Property {$_-replace '[\d]'},{$_-replace '[a-zA-Z\p{P}]'-as [int]} 
$AllLastOcted = $AllLastOcted | sort -Property {$_-replace '[\d]'},{$_-replace '[a-zA-Z\p{P}]'-as [int]} 

$guestIP = $guestIP -replace('192.168.31.','') 

Compare-Object -ReferenceObject ($AllLastOcted) -DifferenceObject ($guestIP) | select -Property InputObject -First 1 | set-Variable AvailableOcted -PassThru 

$AvailableOcted

我的目標是，是，我有作爲導致第一可用octed，我可以使用。像：

write-host "IP that can be used is 192.168.31.$AvailableOcted" 
PS > IP that can used is 192.168.31.2

來源

2016-08-23 Dave Greebe

使用-ExpandProperty代替，物業在對您的選擇，Statement對象結束。 –

可以簡化這個有很多。

您可以使用範圍運算符來創建數組，而不是定義2到254中的所有數字。你也不需要[int]演員。除了使用Compare-Object cmdlet來過濾octeds的，你可以使用Where-Object的cmdlet：

$guestIP = @("192.168.31.200","192.168.31.31","192.168.31.90","192.168.31.25","192.168.31.100") 

$AllLastOcted = 2 .. 254 
$usedOcted = $guestIP -replace '.*\.' 
$nextAvailableOcted = $AllLastOcted | Where { $_ -NotIn $usedOcted } | select -first 1 

write-host "IP that can be used is 192.168.31.$nextAvailableOcted"

輸出：

IP that can be used is 192.168.31.2

來源

2016-08-23 09:02:08

該死的是realy簡化..非常感謝...使這個劇本花了我很多時間:)）...仍在學習powershell。 –

不客氣。繼續！ –

嗯，就這麼簡單：

$AvailableOcted.InputObject

將只返回值。

因此，這將是這樣的：

write-host ("IP that can be used is 192.168.31." + $AvailableOcted.InputObject)

來源

2016-08-23 08:56:38 Syphirint

變量中的比較對象輸出

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