1 00:00:00,000 --> 00:00:00,833 In this lesson, 2 00:00:00,833 --> 00:00:04,650 we're going to go over how to uniquely identify our USB drive. 3 00:00:04,650 --> 00:00:07,980 Now, I went ahead and went to the VirtualBox manager, 4 00:00:07,980 --> 00:00:09,840 just in case anybody has any issues 5 00:00:09,840 --> 00:00:13,620 with having the virtual machine recognize the device. 6 00:00:13,620 --> 00:00:14,651 So what you're going to do 7 00:00:14,651 --> 00:00:17,025 is you're go to the properties up here, 8 00:00:17,025 --> 00:00:19,080 I want you select the virtual machine you're using, 9 00:00:19,080 --> 00:00:20,273 and then you can go to USB, 10 00:00:21,223 --> 00:00:23,250 then you're going to use this green plus sign. 11 00:00:23,250 --> 00:00:25,860 It's going to add particular device, 12 00:00:25,860 --> 00:00:28,233 so just locate your USB device, 13 00:00:29,940 --> 00:00:33,213 and then we'll be able to connect it to the virtual machine. 14 00:00:34,500 --> 00:00:37,290 Now, once you have it plugged in, 15 00:00:37,290 --> 00:00:40,170 it might not be recognized initially once you get on there, 16 00:00:40,170 --> 00:00:41,070 but if that's the issue, 17 00:00:41,070 --> 00:00:43,290 just unplug it and plug it back in 18 00:00:43,290 --> 00:00:45,363 and it should recognize it for you. 19 00:00:47,070 --> 00:00:49,410 So also just to make things a little easier, 20 00:00:49,410 --> 00:00:51,780 we can recognize the vendor ID, 21 00:00:51,780 --> 00:00:53,190 product ID and serial number 22 00:00:53,190 --> 00:00:55,020 that's going to be useful for us later. 23 00:00:55,020 --> 00:00:56,470 So let's hop right into this. 24 00:00:57,602 --> 00:00:58,620 So the first thing we're going to do 25 00:00:58,620 --> 00:01:00,430 it's going to use the lsblk command 26 00:01:01,380 --> 00:01:05,790 and it's going to identify the USB device. 27 00:01:05,790 --> 00:01:07,440 And again, you have to realize 28 00:01:07,440 --> 00:01:09,900 whenever is first loaded on there, 29 00:01:09,900 --> 00:01:12,000 the system gives it a generic name 30 00:01:12,000 --> 00:01:12,833 and we're trying to avoid it. 31 00:01:12,833 --> 00:01:17,700 So sdb, that's going to be the USB hard drive 32 00:01:17,700 --> 00:01:19,000 that I have connected now. 33 00:01:20,700 --> 00:01:24,090 And that's again, and I say it, sdb. 34 00:01:24,090 --> 00:01:27,420 So we're going to use the udev admin command. 35 00:01:27,420 --> 00:01:29,160 So the udev, that's the manager 36 00:01:29,160 --> 00:01:31,290 for all the devices and hardware. 37 00:01:31,290 --> 00:01:33,240 So we're going to use this to get some information 38 00:01:33,240 --> 00:01:34,533 about that really quick. 39 00:01:36,720 --> 00:01:39,573 Use dev/sdb. 40 00:01:46,560 --> 00:01:48,930 Now we see it gives us a lot of detailed information 41 00:01:48,930 --> 00:01:50,910 about the device itself, 42 00:01:50,910 --> 00:01:52,530 we see it identified as sdb. 43 00:01:52,530 --> 00:01:54,210 So information's going to be particularly useful, 44 00:01:54,210 --> 00:01:56,400 it's going to be the ID serial number, 45 00:01:56,400 --> 00:01:58,800 so about five down from the bottom, 46 00:01:58,800 --> 00:02:02,100 iOS device flash drive. 47 00:02:02,100 --> 00:02:04,614 And it's going to be all zeros, HH31, 48 00:02:04,614 --> 00:02:06,264 it's going to be very useful for us. 49 00:02:07,500 --> 00:02:08,880 Scroll down a little bit, 50 00:02:08,880 --> 00:02:12,033 get the ID vendor ID. 51 00:02:18,990 --> 00:02:22,050 Now to get more specific attribute information, 52 00:02:22,050 --> 00:02:23,223 we use the -a symbol. 53 00:02:24,990 --> 00:02:27,090 And now this where we're get into the format 54 00:02:27,090 --> 00:02:28,980 that the files that we'll use 55 00:02:28,980 --> 00:02:31,440 to customize the unique identification, 56 00:02:31,440 --> 00:02:34,470 this is how it's going to identify these things. 57 00:02:34,470 --> 00:02:37,770 So that thing's going to be labeled in the ATTR 58 00:02:37,770 --> 00:02:40,083 type of manner once we're going through this. 59 00:02:41,190 --> 00:02:45,960 So again, this screen walks through each pairing device 60 00:02:45,960 --> 00:02:48,360 starting with the target device 61 00:02:48,360 --> 00:02:50,580 you read in instructions here, 62 00:02:50,580 --> 00:02:51,530 in the information. 63 00:02:54,780 --> 00:02:59,370 Again, a lot of just key information about the device. 64 00:02:59,370 --> 00:03:00,570 Now we'll get into the weeds 65 00:03:00,570 --> 00:03:02,220 about everything that's going on. 66 00:03:06,390 --> 00:03:07,860 So what we want to do is, 67 00:03:07,860 --> 00:03:09,810 let's try to look up the serial number. 68 00:03:11,580 --> 00:03:12,660 Remember, to search in this, 69 00:03:12,660 --> 00:03:15,120 we're going to do /serial, 70 00:03:15,120 --> 00:03:17,490 remember this is piped under the less command. 71 00:03:17,490 --> 00:03:20,583 So we found the serial number under attributes. 72 00:03:28,200 --> 00:03:29,500 This connected to the USB. 73 00:03:30,660 --> 00:03:31,770 And again, while we're on the screen 74 00:03:31,770 --> 00:03:33,630 we're going to look for the ID vendor, 75 00:03:33,630 --> 00:03:34,833 which is right here. 76 00:03:38,490 --> 00:03:40,833 And they're going to annotate the ID product, 77 00:03:43,530 --> 00:03:44,553 just right here. 78 00:03:47,973 --> 00:03:49,830 And we're just going to keep this window up 79 00:03:49,830 --> 00:03:51,840 'cause we're going to need it once we start configuring, 80 00:03:51,840 --> 00:03:54,060 it'll be a little easier that way. 81 00:03:54,060 --> 00:03:56,250 Next we're going to create a udev rule 82 00:03:56,250 --> 00:03:58,260 to automatically link the custom device name 83 00:03:58,260 --> 00:04:00,160 to the USB drive when it's plugged in. 84 00:04:01,530 --> 00:04:02,730 So we're going to use sudo. 85 00:04:10,377 --> 00:04:13,113 Now we're going to put all this on one line. 86 00:04:14,910 --> 00:04:16,890 See, I went ahead and typed this out 87 00:04:16,890 --> 00:04:19,230 just to make sure everything works properly, 88 00:04:19,230 --> 00:04:21,630 'cause this file is very sensitive. 89 00:04:21,630 --> 00:04:24,510 So make sure that you copy everything exactly. 90 00:04:24,510 --> 00:04:26,403 So you see how it says KERNELS here? 91 00:04:27,330 --> 00:04:28,290 1-1. 92 00:04:28,290 --> 00:04:33,290 So we go back, so that's the one, 93 00:04:33,360 --> 00:04:35,133 kernals 1-1, 94 00:04:36,090 --> 00:04:38,733 ID vendor, 05e3, 95 00:04:45,870 --> 00:04:50,703 serial number, 00000000HH31, 96 00:04:53,640 --> 00:04:58,640 ID product here, 0738. 97 00:05:01,737 --> 00:05:04,620 And the symlink is what I want to name it, 98 00:05:04,620 --> 00:05:09,300 so again, this is what the system will recognize 99 00:05:09,300 --> 00:05:10,350 the device as, 100 00:05:10,350 --> 00:05:13,200 so instead of being sdb, 101 00:05:13,200 --> 00:05:15,873 it's going to be myHDD, 102 00:05:16,740 --> 00:05:20,070 that's what we're going to recognize it on the system. 103 00:05:20,070 --> 00:05:22,590 Now all of this is going to be on one line, 104 00:05:22,590 --> 00:05:23,883 so if you see down here, 105 00:05:24,780 --> 00:05:25,743 it's one line, 106 00:05:26,580 --> 00:05:28,320 so type in directly, 107 00:05:28,320 --> 00:05:30,283 going to be KERNELS==, 108 00:05:32,130 --> 00:05:35,520 type in the name that you have for your particular device, 109 00:05:35,520 --> 00:05:38,913 comma space attributes, ATTRS, 110 00:05:40,110 --> 00:05:41,710 and then use the curly brackets, 111 00:05:42,600 --> 00:05:43,433 then you'll start putting in 112 00:05:43,433 --> 00:05:45,003 the attribute names, 113 00:05:45,003 --> 00:05:47,253 ==, and then so on and so forth. 114 00:05:48,690 --> 00:05:51,753 Just make sure you go very slow what you're typing. 115 00:05:56,867 --> 00:05:58,230 Let's go over here. 116 00:05:58,230 --> 00:05:59,760 Now once you have that complete, 117 00:05:59,760 --> 00:06:04,760 what you want to do is use the sudo udev admin control 118 00:06:08,100 --> 00:06:12,183 under reload rules. 119 00:06:14,250 --> 00:06:17,010 Now it usually reloads the rules automatically 120 00:06:17,010 --> 00:06:19,920 but again, we just want to make sure everything is done. 121 00:06:19,920 --> 00:06:23,853 So the next one we'll use is udev admin trigger. 122 00:06:26,160 --> 00:06:30,330 Now the trigger rules also is done when it's connected, 123 00:06:30,330 --> 00:06:32,962 but again, we want to ensure that 124 00:06:32,962 --> 00:06:34,980 once we unplug it and plug it back in 125 00:06:34,980 --> 00:06:36,380 that it's going to work for us. 126 00:06:37,860 --> 00:06:39,243 All right, click this out. 127 00:06:40,200 --> 00:06:42,933 Now we're going to go to our applications, 128 00:06:45,150 --> 00:06:46,473 our favorites files, 129 00:06:47,640 --> 00:06:50,133 and we're going to unmount this first, 130 00:06:51,810 --> 00:06:52,910 we're going to unplug it. 131 00:06:56,430 --> 00:06:57,263 Plug it back in. 132 00:07:04,740 --> 00:07:08,313 So now when we go to our lsblock, 133 00:07:10,530 --> 00:07:12,120 we should be able to find this directly, 134 00:07:12,120 --> 00:07:16,877 'cause you know I can use dev and just say sda, right? 135 00:07:18,060 --> 00:07:19,920 We're going to be able to do the same thing, 136 00:07:19,920 --> 00:07:24,000 but it's going to be myHDD. 137 00:07:24,000 --> 00:07:25,260 So we see now 138 00:07:25,260 --> 00:07:30,260 that we can associate a specific type of name 139 00:07:30,570 --> 00:07:32,250 to instead of sdb1, 140 00:07:32,250 --> 00:07:34,650 it's going to be myHDD. 141 00:07:34,650 --> 00:07:37,650 So whenever we're looking for unique type of information 142 00:07:37,650 --> 00:07:39,990 again, serial numbers or whatever, 143 00:07:39,990 --> 00:07:43,860 it's all going to be associated with myHDD. 144 00:07:43,860 --> 00:07:44,693 But you have to realize 145 00:07:44,693 --> 00:07:47,190 there's so many different USB devices, 146 00:07:47,190 --> 00:07:49,620 and when they're connected to different machines, 147 00:07:49,620 --> 00:07:51,930 in order to uniquely identify them, 148 00:07:51,930 --> 00:07:54,116 instead of having to always look up the serial number 149 00:07:54,116 --> 00:07:55,980 or the product ID, 150 00:07:55,980 --> 00:07:57,900 you can just use as myHDD, 151 00:07:57,900 --> 00:07:59,220 or whatever you want to call it, 152 00:07:59,220 --> 00:08:01,650 install, Sarah's hard drive, 153 00:08:01,650 --> 00:08:03,180 whatever it is, 154 00:08:03,180 --> 00:08:04,440 this is where you would do it. 155 00:08:04,440 --> 00:08:06,270 Now, it's not a common practice, 156 00:08:06,270 --> 00:08:08,790 but it's something that we should be familiar with. 157 00:08:08,790 --> 00:08:10,080 Another way to make sure that 158 00:08:10,080 --> 00:08:12,930 the symbolic link was correctly captured, 159 00:08:12,930 --> 00:08:17,670 is if you start the dev and scroll up, 160 00:08:21,570 --> 00:08:25,890 you'll see right here, myHDD, 161 00:08:25,890 --> 00:08:28,713 again, it's pointing to sdb1. 162 00:08:29,880 --> 00:08:31,890 Next, we're going to walk through how to 163 00:08:31,890 --> 00:08:34,470 install a virtual printer. 164 00:08:34,470 --> 00:08:38,100 Now, the system that we're going to use to do is called CUPS. 165 00:08:38,100 --> 00:08:40,530 CUPS is a print management system for Linux 166 00:08:40,530 --> 00:08:43,350 that enables a computer to function as a print server. 167 00:08:43,350 --> 00:08:45,420 So the first thing we want to do is, 168 00:08:45,420 --> 00:08:47,910 we're actually going to go to the GUI, 169 00:08:47,910 --> 00:08:49,470 and we want to take a list of the printers, 170 00:08:49,470 --> 00:08:50,970 just to verify that there's no printers 171 00:08:50,970 --> 00:08:53,130 actually currently present. 172 00:08:53,130 --> 00:08:54,213 Go to application, 173 00:08:55,200 --> 00:08:56,493 in system tools, 174 00:08:59,880 --> 00:09:00,993 go to the settings. 175 00:09:03,810 --> 00:09:05,973 Scroll to the bottom, under devices, 176 00:09:07,350 --> 00:09:08,880 go to printers here. 177 00:09:08,880 --> 00:09:10,680 And we can see we don't have anything installed. 178 00:09:10,680 --> 00:09:12,180 So we're going to change that really quick 179 00:09:12,180 --> 00:09:14,013 by installing a virtual PDF printer. 180 00:09:16,500 --> 00:09:17,820 So with this command, 181 00:09:17,820 --> 00:09:20,010 we're going to use the yum package manager, 182 00:09:20,010 --> 00:09:23,460 and this is going to allow us to install the package, 183 00:09:23,460 --> 00:09:26,010 so we have to download it from the external repository. 184 00:09:26,010 --> 00:09:29,124 So we're going to just go ahead and click enter here. 185 00:09:29,124 --> 00:09:31,620 And this is a well known error with this, 186 00:09:31,620 --> 00:09:34,249 so we might have to actually do this twice 187 00:09:34,249 --> 00:09:36,723 for it to fully go through with this, 188 00:09:37,573 --> 00:09:39,673 just to make sure everything went through. 189 00:09:50,460 --> 00:09:52,620 Now let's go back to the settings here, 190 00:09:52,620 --> 00:09:54,300 and now we can see that the CUPS PDF 191 00:09:54,300 --> 00:09:55,653 is ready for print for us. 192 00:09:56,520 --> 00:09:59,250 Now we need to make this our default printer, 193 00:09:59,250 --> 00:10:00,850 so we're going to unlock this here. 194 00:10:03,210 --> 00:10:04,590 Enter our password. 195 00:10:04,590 --> 00:10:06,000 Let's just move the screen over a little bit 196 00:10:06,000 --> 00:10:08,820 so we can see the settings. 197 00:10:08,820 --> 00:10:10,140 We can go to settings, 198 00:10:10,140 --> 00:10:12,040 and we'll use this printer by default. 199 00:10:20,640 --> 00:10:21,940 Next thing we're going to do, 200 00:10:22,890 --> 00:10:25,140 going to use the lpr command, 201 00:10:25,140 --> 00:10:27,870 which is pretty much, it's a print command, 202 00:10:27,870 --> 00:10:31,210 and we're going to use our computer list file 203 00:10:33,330 --> 00:10:35,043 that we used earlier, 204 00:10:36,270 --> 00:10:39,090 and this going to default and send it to our desktop. 205 00:10:39,090 --> 00:10:41,193 So we should be able to go to desktop now, 206 00:10:42,319 --> 00:10:44,943 and we can see the PDF version of that file here. 207 00:10:48,510 --> 00:10:50,210 So that was very quick, very easy. 208 00:10:51,090 --> 00:10:55,200 We just went over how to install a virtual PDF printer, 209 00:10:55,200 --> 00:10:57,469 and also how to customize how Linux recognizes 210 00:10:57,469 --> 00:11:00,300 our external USB devices. 211 00:11:00,300 --> 00:11:01,650 Thank you for sticking through this walkthrough, 212 00:11:01,650 --> 00:11:03,450 and I'll see you in the next lesson.