1 00:00:01,490 --> 00:00:02,780 Hello and welcome. 2 00:00:03,020 --> 00:00:10,400 So now we are going to continue our commands and in this lesson we are going to see the hardware information 3 00:00:10,400 --> 00:00:13,580 commands for our Linux operating system. 4 00:00:13,940 --> 00:00:20,300 Now, before going to those commands, let me show you one command, which is very important and is 5 00:00:20,300 --> 00:00:24,320 very, very helpful and handy, which is the history command. 6 00:00:24,530 --> 00:00:32,600 Now, by typing history onto your terminal, you are going to know all the commands that you have previously 7 00:00:32,600 --> 00:00:34,490 executed onto your terminal. 8 00:00:34,670 --> 00:00:42,050 So let us simply type history and hit enter and you can see the commands that we have been executed 9 00:00:42,050 --> 00:00:43,610 into our computer. 10 00:00:44,420 --> 00:00:51,210 This is very helpful to know what were the previous commands that we have executed into our computer? 11 00:00:51,230 --> 00:00:58,070 As you can see, I have executed a lot of commands into my computer in my history, which can be seen 12 00:00:58,070 --> 00:00:58,850 from here. 13 00:00:59,960 --> 00:01:00,770 Perfect. 14 00:01:00,950 --> 00:01:02,810 Now let's move forward. 15 00:01:03,110 --> 00:01:05,810 Let me just clear the terminal for you. 16 00:01:06,080 --> 00:01:10,580 For that, you need to type the command, which is clear and hit enter. 17 00:01:11,210 --> 00:01:18,170 All right, so the first command of this lesson is d m e s g. 18 00:01:18,500 --> 00:01:26,420 Now, when we type this command, we are going to display the messages in the col ring buffer, which 19 00:01:26,420 --> 00:01:31,130 looks something like this, and you can see the output over here. 20 00:01:31,910 --> 00:01:37,010 Now the second command is cat space. 21 00:01:38,300 --> 00:01:41,690 Proc space CPU info. 22 00:01:41,960 --> 00:01:44,580 Now you must have guessed it right. 23 00:01:44,600 --> 00:01:50,490 This command is used to display and know the CPU information. 24 00:01:50,510 --> 00:01:59,150 As you can see over here, the processor, the vendor ID, the CPU, family model, the CPU, megahertz 25 00:01:59,180 --> 00:02:01,460 caches, etc., etc.. 26 00:02:01,490 --> 00:02:05,480 So this is the information about the CPU. 27 00:02:05,510 --> 00:02:11,960 It says Intel core i7 910 CPU at 2.6 gigahertz CPU. 28 00:02:12,170 --> 00:02:12,860 Perfect. 29 00:02:13,160 --> 00:02:20,480 Now similar to the CPU information, let us understand the memory information, which is the RAM information 30 00:02:20,480 --> 00:02:21,260 for that. 31 00:02:21,260 --> 00:02:23,380 Instead of CPU, you simply have to type. 32 00:02:23,390 --> 00:02:24,110 Mm. 33 00:02:24,350 --> 00:02:27,680 It stands for memory and hit enter. 34 00:02:27,920 --> 00:02:36,350 And here you can see the memory which has been allocated to this CPU and you can see these are all the 35 00:02:36,350 --> 00:02:44,600 details of the memory and you can see the memory total, the memory free, the memory which is available, 36 00:02:44,630 --> 00:02:46,070 etc., etc.. 37 00:02:46,850 --> 00:02:47,600 Perfect. 38 00:02:47,630 --> 00:02:49,250 Let's move forward. 39 00:02:49,430 --> 00:02:54,740 And now we are going to see the command, which is free space hyphen etch. 40 00:02:54,770 --> 00:03:04,970 Now this displays the free and used memory hyphen etch stands for human readable format hyphen MX that 41 00:03:04,970 --> 00:03:07,520 we are going to see currently stands for. 42 00:03:07,550 --> 00:03:11,300 To see the output in M.B. and hyphen G stands for. 43 00:03:11,330 --> 00:03:13,440 To see the output in GB. 44 00:03:13,460 --> 00:03:19,220 So let me just simply first type etch and hit enter and you can see the total memory which has been 45 00:03:19,220 --> 00:03:22,220 assigned is 2.9 GB. 46 00:03:22,250 --> 00:03:23,450 How much is used? 47 00:03:23,480 --> 00:03:25,820 How much is free, etc.. 48 00:03:26,620 --> 00:03:28,900 And you can see the output in GB. 49 00:03:28,990 --> 00:03:34,270 If I type hyphen m, you will be able to see the output in MX. 50 00:03:35,290 --> 00:03:36,550 I hope this is clear. 51 00:03:36,880 --> 00:03:39,160 Now let's move forward. 52 00:03:39,460 --> 00:03:43,480 Now we are going to see the command to display the PCI devices. 53 00:03:43,510 --> 00:03:48,610 If connected for that, you have to type ls PCI. 54 00:03:50,030 --> 00:03:53,780 And Space Hyphen TV. 55 00:03:53,960 --> 00:03:59,780 And you can see if any devices that are being connected to my operating system. 56 00:03:59,780 --> 00:04:05,950 And you can see there are a few network adapters which have been connected. 57 00:04:05,960 --> 00:04:13,610 As you can see, the network controller, the USB controller, the VMware Virtual Machine Communication 58 00:04:13,610 --> 00:04:16,160 interface, which has been connected, etc.. 59 00:04:16,310 --> 00:04:23,060 Now if you want to see the USB devices that are being connected for that, you simply have to type LS 60 00:04:23,120 --> 00:04:33,440 USB, USB space, hyphen TV and if any USB devices, if connected, you will be able to see over here. 61 00:04:33,470 --> 00:04:36,400 Now, I have not connected any external device. 62 00:04:36,410 --> 00:04:42,650 You can simply connect an external device and you will be able to see the external device over here. 63 00:04:43,630 --> 00:04:44,240 Perfect. 64 00:04:44,590 --> 00:04:53,200 Now, moving forward, if you want to display the DMI or SNMP iOS hardware information from the bios 65 00:04:53,650 --> 00:05:00,490 that also can be seen using the command, which is the D code and hit enter. 66 00:05:00,760 --> 00:05:04,090 And you can see the BIOS information over here. 67 00:05:04,600 --> 00:05:05,200 Perfect. 68 00:05:05,230 --> 00:05:12,250 Now, if you want to see the disk usage, you can simply type do and you will be able to see the disk 69 00:05:12,250 --> 00:05:14,080 usage by each file. 70 00:05:14,200 --> 00:05:22,060 In case you want a cleaner output, you can simply type d f and you will be able to see the disk usage 71 00:05:22,060 --> 00:05:26,490 of the file system of each disk that has been attached. 72 00:05:26,500 --> 00:05:35,230 Here you can see slash def slash PSD one which is being used 25%, which is also mounted on slash boot, 73 00:05:35,230 --> 00:05:37,510 which we are currently using. 74 00:05:38,020 --> 00:05:45,760 So this is how you can get the system information about the operating system that you are using as well 75 00:05:45,760 --> 00:05:47,500 as the hardware information. 76 00:05:47,650 --> 00:05:49,060 I hope you guys understood. 77 00:05:49,060 --> 00:05:53,960 And in case you have any issues, feel free to ask into the Q&A section. 78 00:05:53,980 --> 00:05:54,760 Thank you.