1 00:00:00,730 --> 00:00:01,810 Hello, my name is Typhoon. 2 00:00:01,810 --> 00:00:03,880 Welcome to another lecture of our course. 3 00:00:03,880 --> 00:00:07,810 In this lecture you will learn about the permission attribute examples. 4 00:00:07,810 --> 00:00:13,320 So let's get started with the regular file that is readable, writable and executable by the file's 5 00:00:13,330 --> 00:00:16,630 owner and no one else has any access. 6 00:00:16,630 --> 00:00:21,820 So in this case, the as you remember, the file starts with this attribute. 7 00:00:21,820 --> 00:00:29,170 And after that we will w r, w, x, and then here with three, three and three, three, three. 8 00:00:30,730 --> 00:00:31,000 Here. 9 00:00:31,000 --> 00:00:31,660 That's it. 10 00:00:31,700 --> 00:00:37,540 This with files that has this permission is a regular file. 11 00:00:38,260 --> 00:00:45,790 Is readable, writable and executable by the file's owner, only the file's owner and no one else. 12 00:00:45,790 --> 00:00:49,480 No group, no everyone has any access. 13 00:00:49,480 --> 00:00:50,830 So here. 14 00:00:53,220 --> 00:00:53,640 Actually. 15 00:00:53,640 --> 00:00:53,910 Yeah. 16 00:00:54,450 --> 00:00:54,870 Here. 17 00:00:54,870 --> 00:00:56,820 So now let's create another here. 18 00:00:56,820 --> 00:01:01,230 So this is a regular file as this implies. 19 00:01:01,260 --> 00:01:05,070 After that, our W here. 20 00:01:08,170 --> 00:01:08,830 That's it. 21 00:01:08,830 --> 00:01:11,140 So guess what it is. 22 00:01:11,170 --> 00:01:19,990 So this is the regular file that is readable and writable by the file's owner, but no one else has 23 00:01:19,990 --> 00:01:20,950 any access. 24 00:01:20,950 --> 00:01:26,560 So in previous we also had this executable executable which we can execute, but in this case we cannot 25 00:01:26,560 --> 00:01:26,920 execute. 26 00:01:26,920 --> 00:01:31,210 But we can only read and write onto this file. 27 00:01:31,210 --> 00:01:33,010 So let's create another example here. 28 00:01:33,010 --> 00:01:35,230 So this is also a regular file. 29 00:01:36,130 --> 00:01:45,220 RW With read and file by the owner and read by the group and also read by the everyone else. 30 00:01:45,550 --> 00:01:49,120 So this is a regular file that is. 31 00:01:49,770 --> 00:01:53,130 Readable and writable by the file's owner. 32 00:01:53,160 --> 00:01:56,610 Regular file is this readable and writable by File's owner. 33 00:01:57,030 --> 00:02:01,740 Members of the file's owner may read the file. 34 00:02:02,620 --> 00:02:06,280 And the file is also world readable. 35 00:02:06,280 --> 00:02:08,200 So let's actually create another text. 36 00:02:08,230 --> 00:02:09,100 Text here. 37 00:02:09,100 --> 00:02:11,530 So this is also a regular file. 38 00:02:12,580 --> 00:02:18,610 RW rw and RW here and. 39 00:02:19,440 --> 00:02:20,250 That's it. 40 00:02:20,370 --> 00:02:26,130 So as with previous examples, this is also regular file. 41 00:02:26,730 --> 00:02:30,120 Regular file that is readable. 42 00:02:30,150 --> 00:02:31,500 Writable. 43 00:02:33,290 --> 00:02:36,290 Readable and writable by File's owner. 44 00:02:37,530 --> 00:02:40,950 And the member also the members of the file. 45 00:02:40,950 --> 00:02:45,450 So it's also the readable and writable for members of the file group only. 46 00:02:45,450 --> 00:02:49,280 And not everyone else cannot access this file. 47 00:02:49,290 --> 00:02:51,390 So let's create another example now. 48 00:02:52,230 --> 00:02:53,970 Let's create a symbolic link, Right? 49 00:02:54,000 --> 00:03:00,360 Or let's first create two directories and lastly, create symbolic link for us. 50 00:03:00,660 --> 00:03:01,320 That's it. 51 00:03:01,350 --> 00:03:01,980 Here. 52 00:03:04,960 --> 00:03:06,720 So let's create a directory. 53 00:03:06,730 --> 00:03:10,190 So d as you as you learned in previous lecture. 54 00:03:10,210 --> 00:03:13,270 D means that it's a directory. 55 00:03:13,270 --> 00:03:20,380 So that's actually rw x rw x and not everyone else. 56 00:03:20,380 --> 00:03:28,810 So this is a directory The owner and the member of the owner group may enter the directory, create, 57 00:03:28,840 --> 00:03:32,140 rename and remove files within the directory. 58 00:03:32,140 --> 00:03:37,120 But no, everyone else does not have access to it. 59 00:03:37,120 --> 00:03:39,400 So let's create another directory example here. 60 00:03:39,400 --> 00:03:47,590 So d, r or D this is a directory rw x r and after that. 61 00:03:48,840 --> 00:03:49,380 Actually. 62 00:03:49,530 --> 00:03:50,150 Yeah. 63 00:03:50,910 --> 00:03:51,850 And here. 64 00:03:51,870 --> 00:03:52,860 So that's it. 65 00:03:53,340 --> 00:04:00,960 As the name implies, the first attribute is a directory, and the owner may enter the directory, create, 66 00:04:00,990 --> 00:04:03,840 rename, and delete files within the directory. 67 00:04:03,840 --> 00:04:12,210 And members of or members of the owner group may enter the directory but cannot create, delete or rename 68 00:04:12,210 --> 00:04:12,840 files. 69 00:04:12,840 --> 00:04:15,270 So they the rename files. 70 00:04:15,270 --> 00:04:16,440 So they enter. 71 00:04:16,440 --> 00:04:24,720 But as the W here implies, they cannot create, delete or rename files and everyone else cannot. 72 00:04:24,840 --> 00:04:26,970 Does not has access to it.