1 00:00:01,040 --> 00:00:05,140 Let's continue looking at working with arrays in PowerShell. 2 00:00:05,140 --> 00:00:08,700 I'm going to create another array here, $n, 3 00:00:08,700 --> 00:00:13,940 and in $n I'm going to add a bunch of different types of objects. 4 00:00:13,940 --> 00:00:18,550 So I've got some strings, some numbers, and if I look at $n, 5 00:00:18,550 --> 00:00:21,110 alright, so you can see all of those elements in there. 6 00:00:21,110 --> 00:00:23,870 I'm doing this just to show you that you can have 7 00:00:23,870 --> 00:00:27,370 different types of objects in the same array. 8 00:00:27,370 --> 00:00:30,440 If I pipe $n to Get‑Member, 9 00:00:30,440 --> 00:00:34,140 Get‑Member is going to show me all of the object types, so 10 00:00:34,140 --> 00:00:41,040 you can see I have numbers and strings. 11 00:00:41,040 --> 00:00:44,650 So many times we work with arrays and want to test if 12 00:00:44,650 --> 00:00:50,840 values are in or contained in an array, and we can do that with some operators. 13 00:00:50,840 --> 00:00:53,040 So let's do ‑contains. 14 00:00:53,040 --> 00:00:59,970 I want to know if the string FOO is contained in $n, and it is True. 15 00:00:59,970 --> 00:01:04,040 This is not case sensitive. 16 00:01:04,040 --> 00:01:06,340 Does it contain xyz? 17 00:01:06,340 --> 00:01:10,040 No, it does not, so I get a value of False. 18 00:01:10,040 --> 00:01:13,240 You can also test the inverse. 19 00:01:13,240 --> 00:01:15,400 Does $n not contain xyz? 20 00:01:15,400 --> 00:01:19,040 And, of course, now I get a result of True. 21 00:01:19,040 --> 00:01:22,050 Now you can also turn this around and instead of using contains, 22 00:01:22,050 --> 00:01:24,630 you can test if something is in. 23 00:01:24,630 --> 00:01:28,570 So I can say, hey, is xyz in $n? 24 00:01:28,570 --> 00:01:32,340 Again, and the results are going to be True or False. 25 00:01:32,340 --> 00:01:38,740 And there's also reverse ‑notin, is xyz not in $n, and that is True. 26 00:01:38,740 --> 00:01:43,990 Whether you use ‑contains or notcontains or in or notin 27 00:01:43,990 --> 00:01:45,920 kind of depends upon the situation. 28 00:01:45,920 --> 00:01:51,180 Sometimes it makes more sense to be looking if it's contained, and other 29 00:01:51,180 --> 00:01:55,940 times it makes more sense to test if something is in. 30 00:01:55,940 --> 00:01:58,240 Let me give you a practical example. 31 00:01:58,240 --> 00:02:02,880 So I'm going to create a list array, or an array called list I should say, 32 00:02:02,880 --> 00:02:10,210 and it has rdp, searchapp, and spoolsv. And I'm going to run Get‑Process, and 33 00:02:10,210 --> 00:02:13,720 I'm going to filter. And there are other ways you could do this, so I'm going 34 00:02:13,720 --> 00:02:16,240 to do this with the operators here. 35 00:02:16,240 --> 00:02:21,500 So I'm going to filter processes, and I only want processes where the 36 00:02:21,500 --> 00:02:26,640 name property of the process is contained in $list. 37 00:02:26,640 --> 00:02:30,560 So if $list contains the process by name, 38 00:02:30,560 --> 00:02:33,540 then write that result to the pipeline. 39 00:02:33,540 --> 00:02:39,760 And sure enough, I get the rdpclip, SearchApp, and spoolsv in the result. 40 00:02:39,760 --> 00:02:47,040 And let's look at doing something with in. 41 00:02:47,040 --> 00:02:51,040 So I created an array called $allowed, and it has values that I have 42 00:02:51,040 --> 00:02:56,590 pulled from the Get‑SmbShare cmdlet. So here's what I want to do, I'm 43 00:02:56,590 --> 00:03:01,640 going to run Get‑SmbShare, and I'm going to check a computer name, and 44 00:03:01,640 --> 00:03:09,040 I want to know only those shares where the description of the share is 45 00:03:09,040 --> 00:03:11,530 not in $allowed. 46 00:03:11,530 --> 00:03:12,240 In essence, 47 00:03:12,240 --> 00:03:15,330 I want to find all the shares that have been set up that 48 00:03:15,330 --> 00:03:20,220 aren't in this list. And on prospero, you can see that there 49 00:03:20,220 --> 00:03:22,880 are shares for scripts and work. 50 00:03:22,880 --> 00:03:26,210 I could also have written that command using the contains or notcontains, 51 00:03:26,210 --> 00:03:34,000 it's just kind of whatever makes sense to you logically, that's the operator to use.