An array in Windows is of fixed size. If you want something of variable size, you use a list or a table. For example, this shows a list which contains strings:
[cid:image001.png@01D348E1.EE4D2130] Now, there is also something called an ArrayList, but let's not make things confusing. PowerShell has lots of syntactic sugar around hash tables and ordered hash tables. They might be useful to you. The formatting question is a little more complicated. That's because the Test-Connection cmdlet is changing the name of the "Destination" column behind your back. (The way it does that is complicated, and trust me, you don't really want to know.) To get what you want: [cid:image002.png@01D348E5.1272F230] But if you are happy with the column being named "Address", which is the true name of the variable: [cid:image003.png@01D348E5.527A8C30] From: listsad...@lists.myitforum.com [mailto:listsad...@lists.myitforum.com] On Behalf Of Raymond Peng Sent: Thursday, October 19, 2017 1:34 PM To: powersh...@lists.myitforum.com; ntsysadm@lists.myitforum.com Subject: [NTSysADM] Powershell array question and formatting question Hi All, Still picking up powershell so please let me know if you see any obvious blunders: I see it say the collection is of a fixed size but how do I remove? I have declared an array with $array="name1","name2", etc... I can access each element with $array[0]... I can use $array += "name5,"name6" but I can not figure out how to remove an element I have tried the Remove method without any luck as well as -= PS C:\WINDOWS\system32> $array.Remove("cxsupportsystems") Exception calling "Remove" with "1" argument(s): "Collection was of a fixed size." At line:1 char:1 + $array.Remove("cxsupportsystems") + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : NotSpecified: (:) [], MethodInvocationException + FullyQualifiedErrorId : NotSupportedException PS C:\WINDOWS\system32> $array kcfileserver wnweb01 pvfile01 corpcxtsgp01 cxsupportsystems Lastly - formatting question: Is there any way to just crop out the rest and keep the destination / IPv4Address info? I tried format-table / select-object but it does not do what I want. I've tried piping after the test-connection in the scriptblock but output is not what I want PS C:\WINDOWS\system32> foreach ($comp in $array){Test-Connection $comp -Count 1} Source Destination IPV4Address IPV6Address Bytes Time(ms) ------ ----------- ----------- ----------- ----- -------- L-SM-RPENG1 kcfileserver 172.29.133.130 32 62 L-SM-RPENG1 wnweb01 172.29.118.101 32 66 L-SM-RPENG1 pvfile01 172.29.171.28 32 72 L-SM-RPENG1 corpcxtsgp01 172.29.118.164 32 70 L-SM-RPENG1 cxsupportsys... 10.2.1.238 32 55 Thank you, Ray
