1 00:00:01,040 --> 00:00:06,140 Next, let me show you how to search for history using the PSReadLine module, 2 00:00:06,140 --> 00:00:11,440 which is installed with PowerShell and pretty much enabled by default. 3 00:00:11,440 --> 00:00:15,910 One thing you can do is do Ctrl+R and then bring up 4 00:00:15,910 --> 00:00:19,040 this backward search in your history. 5 00:00:19,040 --> 00:00:19,600 Now, 6 00:00:19,600 --> 00:00:24,090 PowerShell PSReadLine module will store your history actually in a 7 00:00:24,090 --> 00:00:30,620 text file that will persist across PowerShell sessions so that the 8 00:00:30,620 --> 00:00:34,370 next time you open up PowerShell you can still search your history 9 00:00:34,370 --> 00:00:35,840 with this technique. 10 00:00:35,840 --> 00:00:38,820 The up and down arrows and the history commands won't 11 00:00:38,820 --> 00:00:42,730 work until you run the command, but this approach will work. 12 00:00:42,730 --> 00:00:49,740 So I can say, let's do get‑, and you can see it already filling in, service. 13 00:00:49,740 --> 00:00:52,740 And if I find what I want, then I can just hit Enter. 14 00:00:52,740 --> 00:00:59,910 So that's really nice Ctrl+R, get‑process, like that. 15 00:00:59,910 --> 00:01:02,840 I do like that quite a bit. 16 00:01:02,840 --> 00:01:05,560 I'll show you something else here with PSReadLine, 17 00:01:05,560 --> 00:01:11,040 and that is a new feature that will allow you to get some prediction. 18 00:01:11,040 --> 00:01:17,240 So let's look at get‑module PSReadLine. 19 00:01:17,240 --> 00:01:20,540 I use tab completion to complete that value. 20 00:01:20,540 --> 00:01:24,400 So I'm running version 2.1 or later, 21 00:01:24,400 --> 00:01:27,840 which is what you're going to need in order for what I'm about to show you. 22 00:01:27,840 --> 00:01:29,850 There's a new feature that, 23 00:01:29,850 --> 00:01:32,990 as I'm recording this course, is still technically in 24 00:01:32,990 --> 00:01:35,290 beta, but I know it will be coming out, 25 00:01:35,290 --> 00:01:38,180 and I know it's something that you'll want to take advantage of, so I'm 26 00:01:38,180 --> 00:01:41,130 going to go ahead and include it in the course here. 27 00:01:41,130 --> 00:01:45,330 I have notes in the download file to show you how to update 28 00:01:45,330 --> 00:01:48,540 the module if you have an older version. 29 00:01:48,540 --> 00:01:50,300 So I'm going to run a command called 30 00:01:50,300 --> 00:01:57,190 Get‑PSReadLineOption. And it's kind of hard to see here, 31 00:01:57,190 --> 00:02:00,780 but there is InlinePredictionColor. And there's an 32 00:02:00,780 --> 00:02:04,440 anti‑escape sequence that is kind of hard to see. 33 00:02:04,440 --> 00:02:09,390 But what this is going to do is allow me to predict, based on my history, 34 00:02:09,390 --> 00:02:12,240 what command I want to run. 35 00:02:12,240 --> 00:02:15,640 Now, before I can use this, I need to turn this on. 36 00:02:15,640 --> 00:02:20,940 So I'm going to do Set‑PSReadLineOption. 37 00:02:20,940 --> 00:02:26,840 And I'm using tab complete. 38 00:02:26,840 --> 00:02:28,660 There's a PredictionSource parameter, 39 00:02:28,660 --> 00:02:32,340 and I'm going to use History. Eventually there'll be some other options here, 40 00:02:32,340 --> 00:02:37,580 but History is what I'm going to use. Now that it's turned on, 41 00:02:37,580 --> 00:02:41,220 lets clear the screen here, and if I start typing, and this 42 00:02:41,220 --> 00:02:44,740 may be hard to see on the screen, I'm going to fix this in a moment. 43 00:02:44,740 --> 00:02:51,960 So I typed get, and very faintly in that dark gray color is a 44 00:02:51,960 --> 00:02:54,110 prediction based upon what I have done. 45 00:02:54,110 --> 00:02:54,560 Well, 46 00:02:54,560 --> 00:02:59,790 that's impossible to read really for my demonstration 47 00:02:59,790 --> 00:03:02,870 purposes. And even if I wasn't demonstrating, 48 00:03:02,870 --> 00:03:03,820 that's really hard to read. 49 00:03:03,820 --> 00:03:08,130 So, I'm going to modify that color. And this is going to 50 00:03:08,130 --> 00:03:10,360 be done with an anti‑escape sequence. 51 00:03:10,360 --> 00:03:24,240 So let's do Set‑PSReadLineOption ‑Colors. 52 00:03:24,240 --> 00:03:28,350 I have a little benefit here because I've already done this before in 53 00:03:28,350 --> 00:03:33,250 preparation for the demo, I have this command in my demo history so 54 00:03:33,250 --> 00:03:36,240 I'm able to kind of cheat and get to it. 55 00:03:36,240 --> 00:03:40,740 So I'm going to change the output using this sequence, 56 00:03:40,740 --> 00:03:43,940 which will display it in a different color. 57 00:03:43,940 --> 00:03:47,440 So now let's clear the screen. Let's do get. 58 00:03:47,440 --> 00:03:50,530 Now you can see there's the get‑PSReadLineOption. 59 00:03:50,530 --> 00:03:56,200 I hit the right arrow key to complete that. Or let's say I wanted to 60 00:03:56,200 --> 00:04:07,140 Get‑Service. And I was just hitting Tab, and that auto completed it, but it 61 00:04:07,140 --> 00:04:08,820 ‑‑‑ I must not have much there with Get‑Service. 62 00:04:08,820 --> 00:04:12,900 Let's do get, if you don't want it then you just 63 00:04:12,900 --> 00:04:16,150 can ignore it, get‑service bits. 64 00:04:16,150 --> 00:04:23,440 So if I do get‑service, there's bits, and I can back up. 65 00:04:23,440 --> 00:04:26,590 There'll be a future version that has another feature 66 00:04:26,590 --> 00:04:29,490 that will allow you to display a list, 67 00:04:29,490 --> 00:04:31,650 and then you can pick the one that you want. 68 00:04:31,650 --> 00:04:38,080 But this prediction with PSReadLine is going to be pretty handy. I'm still, 69 00:04:38,080 --> 00:04:41,420 to be honest with you, getting used to it and trying to get my learn new 70 00:04:41,420 --> 00:04:43,690 muscle memory in order to take advantage of it, 71 00:04:43,690 --> 00:04:47,990 but you will want to take a look at it when it is available. 72 00:04:47,990 --> 00:04:49,740 Actually, you can use it now. 73 00:04:49,740 --> 00:04:55,910 Once they release the next version of PSReadLine, 74 00:04:55,910 --> 00:04:59,580 I think everything will be baked in, and certainly by the next 75 00:04:59,580 --> 00:05:02,990 release of PowerShell, totally baked in. 76 00:05:02,990 --> 00:05:06,600 And this will be the way that we'll be using it to find 77 00:05:06,600 --> 00:05:09,570 what commands we ran from our history. 78 00:05:09,570 --> 00:05:15,000 And with that, let's go back to the slides. I want to talk about one other thing here.