I mean, if the data was written to a HDD, then any forensic tool can read the magnetic residual patterns on the metal platters instead of looking for file headers?

0x4E4F@sh.itjust.works · 17 pts · 1y (3 replies)

That is true, though it would be pointless to look for it in /dev/null.

stoicmaverick@lemmy.world · 8 pts · 1y (2 replies)

There is nothing in /dev/null, and no man needs nothing.

SmoothLiquidation@lemmy.world · 9 pts · 1y (1 reply)

A hole would be something, this is NOTHING!

0x4E4F@sh.itjust.works · 8 pts · 1y

/dev/void 🤔

stoicmaverick@lemmy.world · 18 pts · 1y (1 reply)

That hack Torvalds keeps denying my pull request to implement /dev/aether which would immediately begin overwriting the entire disk and all other mounted storage with the repeating content of whatever is moved there.

0x4E4F@sh.itjust.works · 8 pts · 1y

That is... brilliant! I love it!

TimeSquirrel@kbin.melroy.org · 15 pts · 1y (8 replies)

Programmatically, what does the kernel actually do with data sent to /dev/null? Put it in a temp buffer and just delete it?

m_f@midwest.social · 20 pts · 1y (5 replies)

I was also curious, here's a good answer:

https://unix.stackexchange.com/questions/670199/how-is-dev-null-implemented

The implementation is:

static ssize_t write_null(struct file *file, const char __user *buf,
              size_t count, loff_t *ppos)
{
    return count;
}

TimeSquirrel@kbin.melroy.org · 16 pts · 1y (4 replies)

So it's basically doing nothing and lying about it. 😆

taldennz@lemmy.nz · 17 pts · 1y (3 replies)

"I accepted all of the bytes you gave me. I didn't do anything with them, but I accept you gave them to me".

0x4E4F@sh.itjust.works · 4 pts · 1y (2 replies)

Could've at least say thank you...

taldennz@lemmy.nz · 2 pts · 1y (1 reply)

It's open source. If manners are an important feature to you perhaps look into contributing... :)

0x4E4F@sh.itjust.works · 2 pts · 1y

Yeah, that could actually be fun to be honest, lol 😂. But I just know the PR would be rejected, lol 😂.

Flipper@feddit.org · 17 pts · 1y

The syscall to write passes a buffer and length. If it is Dev null the call just returns without doing anything more.

Boxscape@lemmy.sdf.org · 6 pts · 1y

Programmatically, what does the kernel actually do with data sent to /dev/null?

I imagine it's like getting nullified in that olde show ReBoot.

c0smokram3r@midwest.social · 4 pts · 1y

[ removed ]

possiblylinux127@lemmy.zip · 2 pts · 1y (5 replies)

Why would you be trying to recover something from a virtual device?

0x4E4F@sh.itjust.works · 4 pts · 1y (4 replies)

Because apparently, he moved it there... and doesn't know what /dev/null is...

possiblylinux127@lemmy.zip · 2 pts · 1y (1 reply)

It is still on the disk though

Do people not understand how files work? Actually never mind that makes sense.

0x4E4F@sh.itjust.works · 1 pts · 1y

Yes.

possiblylinux127@lemmy.zip · 2 pts · 1y (1 reply)

It is still on the disk though

Do people not understand how files work? Actually never mind that makes sense.

shyguyblue@lemmy.world · 4 pts · 1y

Do people not understand how files work?

Oh honey, imagine trying to tech-support a family of rednecks. Threaten to charge them for services and they'll stop pretty quick though...