Beyond Fi/e Sys/em Limitations
ฝัง
- เผยแพร่เมื่อ 13 ก.ค. 2024
- Let's reach 2000 likes 💜 Neither Linux nor Windows let us create files with a slash, or named with a single dot. Though, what if we ignore them? In this video, we shall enforce these names by just putting them on disk without the OS being able to stop us. We're also gonna make the OS give us a lot of space on disk... We're sure gonna have a lot of fun.
0:00 - Introduction
0:30 - #1 - Formatting
1:37 - #2 - File/ames
7:23 - #3 - FILE/A~2
8:05 - #4 - . and ..
9:30 - #5 - File size fun
12:29 - Outro
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#SlashyFilenames #lookinside #flytech - วิทยาศาสตร์และเทคโนโลยี
3:36 The reason a command like "sudo cat filename > /dev/sdc1" fails, is because the redirect is still performed by your shell. In other words: sudo only affects the "cat filename" part of the command and not the "> /dev/sdc1" part. And since your shell is not a root shell, the redirect fails, since you don't have the permissions to write to that file. I haven't tried it out, but you could probably get around that with the following command: "cat filename | sudo tee /dev/sdc1".
Btw, if you ask yourself why you could read the file earlier without problems: it is because the command used was "sudo cat /dev/sdc1 > filename". Here the sudo applies to "cat /dev/sdc1", meaning the cat process has the permissions to read the file. The redirect is however again performed by the shell. (Because of that the resulting file is then owned by your normal user and not the root user, therefor you can edit it without requiering root privileges.)
Mr flyperson needs to see this
Beat me to it by 15 minutes, yeah using tee is the correct thing here.
Also `sudo sh -c "echo filename > /dev/sdc1"`, but that's just the same command from the video done without the pipe.
I don't like sudo tee, since it spits out the file contents to stdout (which is bad for binary files). I'm not sure what's a better way though.
@@nyanpasu64
For reading/writing devices most people use `dd`.
for example `sudo dd if=sdc1.raw of=/dev/sdc1` copies the whole data from the input file `sdc1.raw` to the output file `/dev/sdc1`.
@@nyanpasu64 damn, forgot about that. You could add >/dev/null after tee to suppress that
Flytech is the one of those channels who have *really* interesting and always unique content. Keep it up 👍
Yes
Under linux, the behavior of . and .. files is a lot more interesting because filesystem links are far more common, and paths that traverse them can't simply be normalized by deleting a `..` and the element before it.
8:06 Actually it is possible within Windows to make . and .. file names through some obscure tricks. I've demonstrated how to do so on NTFS partitions in a video, and will demonstrate how on FAT16/32 in a future video via a different technique.
self promo 💀
it's possible in android too
self promo 💀
@@arrax_s So I guess he should just keep a secret instead? 🙄
@@I.____.....__...__ its a joke
God these videos are so entertaining, i love seeing how bad you can confuse windows! Thanks for the good vid as usual ♥
I love how Fly creates a Con folder like it's nothing
and you still are at just 100k?
man,you put lotsa effort into these videos!
Yeah he deserves like 10M subs
First of all thanks youtube for recommending this channel to me, and thanks sir for making such a great informative content I bing watch your all videos.. I love how you edit your videos..
I wonder what would happen if, with only the long name modified, you attempted to access the folder via its short name, like "E:\CONTAI~1" for "E:\Con/ainer"
In Windows, that works. In fact, it's the preferred remedy for dealing with a funny file name.
In later years, though, Short Names are turned off for NTFS. They are always there for FAT, but you'll need to type it out exactly and in full and not rely on wildcards or completion.
So that's why my script broke!😮
Great video as always! :) Nice ending.
this is probably my favorite tech channel!
Personally, I like the idea of flytech making videos about messing with windows and linux. especially because there really aren't any channels that try messing with linux.
He didn't mess with Linux. Linux was completely fine when he typed 'ls -f'. It just said the drive was corrupted and Flytech didn't mess with it. He just moved on to show us Windows.
@@Q2FwaXRhbGlzbSBiYWQu I said “the idea”
Very interesting and creative ways to confuse Windows, good job!
Love watching your videos dude! 🙂💜
💜
The first person to know how to make restricted characters from mac, windows, linux
PartedMagic
Remember when he posted very frequently? Now he isn't posting for months
Maybe he died? I hope not
@@francescoreale8452 Why you think so
@@gapp8163 i don't know i said maybe he died. he is not posting video and this worries me
maybe hes taking a break??????)??
@@francescoreale8452 he's maybe taking a break or making videos
This channel is the only one I have full notifications for
Yay, a new video from our favorite tech youtuber
The reason why you have to pipe command like this to "sudo" is that '>' gets interpreted by the shell itself.
Detailed: your shell interprets that redirection, and prepares a pipe for "sudo", but it (shell) is not privileged, and thus the open() syscall fails with EACCES (permission denied).
You can use "dd if= of=" to avoid this.
P.S. "dd" has "status=progress" flag that shows some kind of progressbar, but "pv" provides more progressbarish progressbar
P.S.S. Would you make the videos like this about Linux?
You should do a video about hard linking directories in Linux, since that's one of the things Linux doesn't like to let you do
You can use mounts or even bind mounts instead.
7:08 “Unspecified error” explorer having no idea what is going on
10:59 - Although it shows 4,194,304KB in explorer, the actual value being shown is 4,294,967,295B. Keep in mind: the real size is 28B.
Milestones:
B = Bytes
KB = Kilobytes
MB = Megabytes
GB = Gigabytes
TB = Terabytes
PB = Petabytes
Funfact = 4294.967295MB = 4294967295B
This is the first time I’ve participated in a flytech premiere!
same...
coo/ video fly/ech!
Can wait to create a Fite on my compute
My tech is defenitely flying!
I watched you on a tv. Now on a smartphone
And u have 100k!!
FlyTech is a very smart programmer.
There really is nothing like fitting 1,571,428,571,428,571% the amount of data possible in a 64MB partition.
Haha, showed this to my brother who worked on Explorer and other aspects for Microsoft, he literally just shrugged and said "Windows."
Legends will say: You can create a file named Con in Windows now.
Only now.
1 GB flag drives are generally old and slower than newer drives. But it's faster to scan the whole contents including other partitions I guess.
That's because such data is stored in a central place, whereas the file sum needs to be computed by checking every single file
FlyTech: *tries to make a folder named con*
FlyTech: ... Ah, right... I forgot con is a banned word
If Enderman + FlyTech will install windows 10, they will done in 1 min ;)
440 TB compressed into 62 MB is quite impressive!
We're really living in the future
I don't know how known this trick is but I feel like you could do some very malicious stuff with that. It's not dangerous in itself but it's unexpected behavior in a very basic part of the OS.
Hmm... my experience with similar experiments is that the \\? approach let you have any character except "\" and (for NTFS) ":". But, I was calling OpenFile API directly, not using GUI programs, and it was an NTFS-forrmatted RAM disk. I don't recall which version of Windows at the time.
You can actually use ":" in a filename in NTFS, but it just doesn't do what you think. It's a delimiter and what follows is taken as the name of an alternate data stream. People and programs have used ":" in filenames completely unaware that it was doing this; it read what it wrote under the same name, so nobody cared enough to treat it as a bug.
It's always entertaining when things half-work but it seems that invalid names are completely and utterly broken.
v o i c e r e v e a l
the reason why you couldnt go into Con/ainer is because Windows thinks that it is two different folders, *Con* and ainer, but Con is a forbidden filename, which might be why it didnt work.
Where are u :(
I see you've already seen a comment on why "sudo cat file >/dev/sdX" fails.
If you want an ezpz fix to this rather than having to echo and pipe to a root shell, just "sudo -i" to get into a root shell.
In here you won't need any more sudo, and your redirects will also be root, hence fixing your issue.
There are many other ways to enter root shells other than "sudo -i", but this is my preferred.
Reminds me of Windows 3.1 when a dumb app managed to create a file with a space in its name. Nothing could touch it. I actually fixed it by using a hex editor on the drive itself to change the name.
In the first half, before you edited the short names, would it have been possible to use the intact short names to access those files and folders? IIRC windows is normally perfectly happy to let you refer to a file by its short name.
I tried, and it failed with the exact same message. Though I must admit that in retrospect I am not 100% sure that I used the correct file name, so I'm very sorry for that...
Fun Fact: in msdos, folders/files werent allowed to have spaces, neither „”. So the names in DOS were FOLDE~1
What if the partition is compressed? Does that allow for a greater total file size? (Greater than tb and into petabytes) Like zip bomb but instead with a compressed partition.
Does fat32 support compression? For NTFS, file size trickery doesn't work (I tried)
@@FlyTechVideos I guess they mean using the compression algorithm to create 'fake' size, rather than just filesize attribute
For the files with faked sizes, do they get fixed as soon as the file is touched? Can you still open them in Notepad (and do you get a warning about opening a large file)?
You can't "touch" the file, as any attempt of reading them inevitably fails
Pure. Magic.
yes it is
When I was watching the bytes changing i of remembered that the valorant game shows in control panel as 3tb when in reality its somewhere 20gb
HxD hex editor supports opening a drive directly as if it were a file
Didn't work for me, I guess I did something wrong
Very cool! I do have a question, why do you choose VMware over Virtualbox? I know Virtualbox is free so i'm just wondering. Thank you!
I'm not very familiar with virtual machines so I had I lot of trouble with hyper v and virtual box but I installed VMware and suddenly everything was working without errors
I chose vmware because it works a lot more smoothly than virtualbox for me
A person gave a VMware key to me so I have the pro
Edit: vmware Is free, pro is paid.
Vmware is extremely fast, with more features such as connecting a real device to your vm, not main machine.
VirtualBox can run more operating systems tho.
Thanks for teaching me how to fly lol
12:11 POV:Mom's photographys
finally you made a huge video. i want more vids like this 10+minutes
Well, it's not always that easy. Though I'll keep it in mind, thanks!
@@FlyTechVideos you're welcome! Just try am not forcing u
... By 'changing' the file size, would you be able to get around things like automatic virus scanners on cloud hosted file/share servers?
For instance, I think google drive can only scan files that are 4gb large...
Idea: removing termination null bytes from folder/file names
I think the forward slash only broke it for Linux, as / is the path separator in Linux but just *a character* in Window$. For Window$ only the backslash should make problems, which in turn isn't a problem for Linux as it has no meaning in the context of file paths.
Wouldn't it be cool if there was a file system that had an escape character when it comes to filenames? And that this escape character would allow you to use previously illegal character in filenames? Or even illegal filenames such as "con" or "aux"? Then I'd be putting question marks in filenames that were questions and use double quotation marks for titles and such.
IKR‽ The worst part is that it was already possible in *nix systems by the time DOS was being finalized, but they still chose to use wildcard characters and quotes like that instead fo escaping, so now, our filenames are limited. You can use single-quotes in place of double-quotes, but there's no way to do questions unless you resort to backwards or upside down question-marks. ⁉ ¿ ⁈ ⁇ 🤦 - _Microsoft: doing everything wrong since 1975._
@@I.____.....__...__ Spanish wins then ¿
What happens when you extract too many big zip/rar files? I'm interested, but my pc would go boom if I do that.
Well, you'd fill your disk... that's all
We are 1 step above windows
This man is 40 parallel universes infront of windows
Wow! I never thought you use Linux
Modify now the file system where there will be 2 folders: Confainer and Container. Now rename Confainer to be Container
A legend went to buy some milk
12:03 linus tech tips be like
I call this channel enderman advanced
@FlytechVideos Linux has no restrictions. You can't create folders named "/" ".", ".." because these folders exists on almost every folders. Linux can create folders with restricted symbols, but it can't create folder which already exists.
That doesn't explain why "fi/ename" is invalid in Linux. There definitely are restrictions regarding /.
@@FlyTechVideos I think Linux interprets fi/enames as fi & /enames
7:42 I think the reason only the short names appear is Windows detects "Oh, this file name appears to be corrupt/tampered with. Lets show the short name *and hope the corrupted part isn't in the short name*"
Ok, but when the long name was corrupted and the short one wasn't, it still showed the long one.
@@FlyTechVideos makes sense
I am curious about something. Windows has the ability to create Symbolic links which are more powerful than a regular shortcut, but they cannot be made through the context menu. They can only be made through PowerShell (I am not sure about CMD) with the mklink command. add /d to create a "folder".
To give you an idea of their power, you know Steam's "sourcemods" folder? You cannot change that folder location; Steam will always look for it on the drive it is installed on. I wanted to change its location since I have a MVMe drive dedicated for games, I wanted it there. I used a symbolic link to "redirect" Steam to a directory on that drive, instead of its normal location. There is still a "sourcemods" folder there, but it is not really a folder hehe, Steam thinks it is.
Horrible explanation aside lol, I am curious to see what you can do with those FlyTech since you are much more knowledgeable. Can you use this to access forbidden directories? I'm mainly curious on how these would work on different file structures, like a symbolic link on a NTFS drive that leads to a FAT32 drive, ETC. I would try myself, but I do not want to destroy my system lol.
A way to remove unremovable files: Use IOBit Unlocker and click “Unlock and delete” when “Forced Mode” is checkmarked.
Oh this is the best channel for showing and teaching weird pc stuffs or whatever!!! Ur the best!!! It really breaks windows lol!
That’s coo/
what distro do you use
i wish i could use / .. and . on linux for naming, and other caracters, it would be useful when downloading images massivly
i swear I dont remember this video, felt like a new one but it's 7mo old
help me :( Im having a problem with my PC. I ended task windows explorer and now I do not see the icons on the bottom
Could it have been that part of the stuff that was happening with Con/ainer was caused by it thinking there was a folder named con?
Yes, indeed
What happens if you try this with other filesystems, like ExFat, APFS, or ext4? And how does NTFS reject these invalid filenames?
I have 2 questions:
What Linux distro do you use?
What is the Hex editor for Linux?
- Pop OS
- GHex
@@FlyTechVideos thx very
can we stick virus into file system without victim understand that? it opens automaticlly on OS?
Ok but what happens if you delete the Bsod and trigger it?
Which field of specialization is this in CS? I wanna learn all these. Where to learn them?
This is not really a field... It's just me experimenting with stuff as I either randomly discover myself or get told by someone else
If that's even a field, I'd guess it's something like forensics. Or to an extend "data recovery"
can you say how did you make these subtitles for other languages?
you can do it in youtube studio in the subtitles menu
Can you make fake file size for the windows files (like csrss or files in system32) ?? that would be intersting... Thanks man keep it up !
Yes but for NTFS the trickery doesn't work like this sadly
@@FlyTechVideos so let's make windows support FAT 32 !!!!!!
What about modifying the allocation tables so that different files share blocks and data with each other? Bet you could make the disk defragmenter properly choke if you did that.
I suppose that this is very much possible, I'll see if I can try stuff with this. Thanks!
Imagine using this trick to "erase" a friend's files
Wich emulation system are you using ?
And also what if you use a backslash on the slash to like cancel the character
That's not emulation, that's a virtual machine. It's vastly different. And the backslash thing wouldn't work because it doesn't let you have any kind of / in your file names
@@shadesoftime yeah, virtual machines are emulators and emulates a processor, a graphic card, a monitor, etc
What do you call emulators ?
@@shadesoftime in a lot of languages (bash included), the backslash cancel the character after it
Example: $ cd Folder\ with\ spaces
@@tt_thoma bash is a shell, not a language.
@@generallyunimportant bash has its own programming language called bash like MS-DOS with batch
what if you do instruc\tions with a backslash
All file formats start with the . (dot) symbol, but Windows doesn't allow us to use the . (dot) symbol in file names, so how does that work?
and also, you can't use / (slash) in file names because the path uses that. for example: *C:/Windows/System32* and if the file name bypassed to have / (slash) in it, you can't delete it but I think you can find more in this video.
> Windows doesn't allow us to use the . (dot) symbol in file names
It does ... it definitely does. Never seen all the files ending in .txt, .exe, .png, .jpg and so on?
> you can't use / (slash) in file names because the path uses that
I know, I just wanted to push beyond that limitation and do it anyway :)
zip bombs be like so we have 113k files on 64MB partion but we unpack them to 440TB
What distro are you using?
Pop OS
Could we do the reverse for file sizes, making filles smaller faking Windows about how much free space is on the partition and see what happen when it exceeds the drives free space?
Yes, though the partition free space is unaffected as you can see in the video.
@@FlyTechVideos ok, thanks
"flyday"
Imagine the real cost of 440 TB disk 💀
How Did You Make Those Subtitles, The TH-cam Ones
Did you intentionally name it "container" and replace the "t" so it would say "con" before the slash?
No, i only noticed that when i was far within recording
@@FlyTechVideos Did you realize before you tried creating the folder and got the error?
What happens if you open any of the files, at the end?
It'd say it can't open it (read error), that's all
What linux distro and graphic interface do you use?
i think the distro is pop!_os
The file manager seems to be Nemo, and from the style I'd say it's Gnome.
Make a easter egg called "bonk!" First set the time to 2009 for year then hover over recycle bin it will be replaced by a baseball bat
Weird disk drive errors. Just feels like normal to me when I see a windows video or experiment
p.s. i don't know what to say here
oh come on Idk about hex stuff it's so complicated, and I'm scared if I wipe my entire hard drive, can u do step by step, also do I have to do all the steps or the step at 9:30